diff --git a/src/main/java/com/rometools/modules/base/GoogleBaseImpl.java b/src/main/java/com/rometools/modules/base/GoogleBaseImpl.java
index 408a630..73f0840 100644
--- a/src/main/java/com/rometools/modules/base/GoogleBaseImpl.java
+++ b/src/main/java/com/rometools/modules/base/GoogleBaseImpl.java
@@ -1,40 +1,36 @@
 /*
  * GoogleBaseImpl.java
- *
+ * 
  * Created on November 16, 2005, 2:06 PM
- *
- * This library is provided under dual licenses.
- * You may choose the terms of the Lesser General Public License or the Apache
- * License at your discretion.
- *
- *  Copyright (C) 2005  Robert Cooper, Temple of the Screaming Penguin
- *
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * 
+ * This library is provided under dual licenses. You may choose the terms of the Lesser General
+ * Public License or the Apache License at your discretion.
+ * 
+ * Copyright (C) 2005 Robert Cooper, Temple of the Screaming Penguin
+ * 
+ * 
+ * This library is free software; you can redistribute it and/or modify it under the terms of the
+ * GNU Lesser General Public License as published by the Free Software Foundation; either version
+ * 2.1 of the License, or (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+ * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and
- * limitations under the License.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License along with this library;
+ * if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307 USA
+ * 
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. * See the License for the specific language governing permissions and limitations
+ * under the License.
  */
 package com.rometools.modules.base;
 
@@ -42,6 +38,9 @@ import java.lang.reflect.Array;
 import java.net.URL;
 import java.util.Date;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import com.rometools.modules.base.types.CloneableType;
 import com.rometools.modules.base.types.CurrencyEnumeration;
 import com.rometools.modules.base.types.DateTimeRange;
@@ -69,6 +68,8 @@ public class GoogleBaseImpl implements GoogleBase {
      */
     private static final long serialVersionUID = 1L;
 
+    private static final Logger LOG = LoggerFactory.getLogger(GoogleBaseImpl.class);
+
     /** boolean:listing_type */
     private Boolean listingType;
 
@@ -1297,7 +1298,7 @@ public class GoogleBaseImpl implements GoogleBase {
 
             return gbi;
         } catch (final Exception e) {
-            e.printStackTrace();
+            LOG.error("Error", e);
             throw new CloneNotSupportedException();
         }
     }
diff --git a/src/main/java/com/rometools/modules/base/io/GoogleBaseGenerator.java b/src/main/java/com/rometools/modules/base/io/GoogleBaseGenerator.java
index 57618d8..36ed091 100644
--- a/src/main/java/com/rometools/modules/base/io/GoogleBaseGenerator.java
+++ b/src/main/java/com/rometools/modules/base/io/GoogleBaseGenerator.java
@@ -1,41 +1,36 @@
 /*
  * GoogleBaseGenerator.java
- *
+ * 
  * Created on November 17, 2005, 2:46 PM
- *
- * This library is provided under dual licenses.
- * You may choose the terms of the Lesser General Public License or the Apache
- * License at your discretion.
- *
- *  Copyright (C) 2005  Robert Cooper, Temple of the Screaming Penguin
- *
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * 
+ * This library is provided under dual licenses. You may choose the terms of the Lesser General
+ * Public License or the Apache License at your discretion.
+ * 
+ * Copyright (C) 2005 Robert Cooper, Temple of the Screaming Penguin
+ * 
+ * 
+ * This library is free software; you can redistribute it and/or modify it under the terms of the
+ * GNU Lesser General Public License as published by the Free Software Foundation; either version
+ * 2.1 of the License, or (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+ * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License along with this library;
+ * if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307 USA
+ * 
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
  */
 package com.rometools.modules.base.io;
 
@@ -48,6 +43,8 @@ import java.util.Set;
 
 import org.jdom2.Element;
 import org.jdom2.Namespace;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.rometools.modules.base.GoogleBase;
 import com.rometools.modules.base.GoogleBaseImpl;
@@ -73,6 +70,8 @@ import com.rometools.rome.io.ModuleGenerator;
 public class GoogleBaseGenerator implements ModuleGenerator {
     private static final Namespace NS = Namespace.getNamespace("g-core", GoogleBase.URI);
 
+    private static final Logger LOG = LoggerFactory.getLogger(GoogleBaseGenerator.class);
+
     /** Creates a new instance of GoogleBaseGenerator */
     public GoogleBaseGenerator() {
         super();
@@ -109,7 +108,7 @@ public class GoogleBaseGenerator implements ModuleGenerator {
                 if (pd.getPropertyType().isArray()) {
                     values = (Object[]) pd.getReadMethod().invoke(mod, (Object[]) null);
                 } else {
-                    values = new Object[] { pd.getReadMethod().invoke(mod, (Object[]) null) };
+                    values = new Object[] {pd.getReadMethod().invoke(mod, (Object[]) null)};
                 }
 
                 for (int j = 0; values != null && j < values.length; j++) {
@@ -118,7 +117,7 @@ public class GoogleBaseGenerator implements ModuleGenerator {
                     }
                 }
             } catch (final Exception e) {
-                e.printStackTrace();
+                LOG.error("Error", e);
             }
         }
     }
diff --git a/src/main/java/com/rometools/modules/base/io/GoogleBaseParser.java b/src/main/java/com/rometools/modules/base/io/GoogleBaseParser.java
index 48b30c9..86a8cbe 100644
--- a/src/main/java/com/rometools/modules/base/io/GoogleBaseParser.java
+++ b/src/main/java/com/rometools/modules/base/io/GoogleBaseParser.java
@@ -1,41 +1,36 @@
 /*
  * GoogleBaseParser.java
- *
+ * 
  * Created on November 17, 2005, 11:31 AM
- *
- * This library is provided under dual licenses.
- * You may choose the terms of the Lesser General Public License or the Apache
- * License at your discretion.
- *
- *  Copyright (C) 2005  Robert Cooper, Temple of the Screaming Penguin
- *
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * 
+ * This library is provided under dual licenses. You may choose the terms of the Lesser General
+ * Public License or the Apache License at your discretion.
+ * 
+ * Copyright (C) 2005 Robert Cooper, Temple of the Screaming Penguin
+ * 
+ * 
+ * This library is free software; you can redistribute it and/or modify it under the terms of the
+ * GNU Lesser General Public License as published by the Free Software Foundation; either version
+ * 2.1 of the License, or (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+ * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License along with this library;
+ * if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307 USA
+ * 
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
  */
 package com.rometools.modules.base.io;
 
@@ -96,10 +91,8 @@ public class GoogleBaseParser implements ModuleParser {
             pds = Introspector.getBeanInfo(GoogleBaseImpl.class).getPropertyDescriptors();
             PROPS2TAGS.load(GoogleBaseParser.class.getResourceAsStream("/com/rometools/modules/base/io/tags.properties"));
         } catch (final IOException e) {
-            e.printStackTrace();
             LOG.error("Unable to read properties file for Google Base tags!", e);
         } catch (final IntrospectionException e) {
-            e.printStackTrace();
             LOG.error("Unable to get property descriptors for GoogleBaseImpl!", e);
         }
     }
@@ -144,7 +137,6 @@ public class GoogleBaseParser implements ModuleParser {
                         handleTag(child, pd, module);
                     } catch (final Exception e) {
                         LOG.warn("Unable to handle tag: " + child.getName(), e);
-                        e.printStackTrace();
                     }
                 }
             }
@@ -198,12 +190,13 @@ public class GoogleBaseParser implements ModuleParser {
         } else if (pd.getPropertyType() == FloatUnit.class || pd.getPropertyType().getComponentType() == FloatUnit.class) {
             tagValue = new FloatUnit(tag.getText());
         } else if (pd.getPropertyType() == DateTimeRange.class || pd.getPropertyType().getComponentType() == DateTimeRange.class) {
-            tagValue = new DateTimeRange(LONG_DT_FMT.parse(tag.getChild("start", GoogleBaseParser.NS).getText().trim()), LONG_DT_FMT.parse(tag
-                    .getChild("end", GoogleBaseParser.NS).getText().trim()));
+            tagValue =
+                    new DateTimeRange(LONG_DT_FMT.parse(tag.getChild("start", GoogleBaseParser.NS).getText().trim()), LONG_DT_FMT.parse(tag
+                            .getChild("end", GoogleBaseParser.NS).getText().trim()));
         } else if (pd.getPropertyType() == ShippingType.class || pd.getPropertyType().getComponentType() == ShippingType.class) {
             final FloatUnit price = new FloatUnit(tag.getChild("price", GoogleBaseParser.NS).getText().trim());
-            ShippingType.ServiceEnumeration service = ShippingType.ServiceEnumeration
-                    .findByValue(tag.getChild("service", GoogleBaseParser.NS).getText().trim());
+            ShippingType.ServiceEnumeration service =
+                    ShippingType.ServiceEnumeration.findByValue(tag.getChild("service", GoogleBaseParser.NS).getText().trim());
 
             if (service == null) {
                 service = ShippingType.ServiceEnumeration.STANDARD;
@@ -226,7 +219,7 @@ public class GoogleBaseParser implements ModuleParser {
         }
 
         if (!pd.getPropertyType().isArray()) {
-            pd.getWriteMethod().invoke(module, new Object[] { tagValue });
+            pd.getWriteMethod().invoke(module, new Object[] {tagValue});
         } else {
             final Object[] current = (Object[]) pd.getReadMethod().invoke(module, (Object[]) null);
             final int newSize = current == null ? 1 : current.length + 1;
@@ -239,7 +232,7 @@ public class GoogleBaseParser implements ModuleParser {
             }
 
             Array.set(setValue, i, tagValue);
-            pd.getWriteMethod().invoke(module, new Object[] { setValue });
+            pd.getWriteMethod().invoke(module, new Object[] {setValue});
         }
     }
 }
diff --git a/src/main/java/com/rometools/modules/cc/types/License.java b/src/main/java/com/rometools/modules/cc/types/License.java
index 29ac313..29ec5eb 100644
--- a/src/main/java/com/rometools/modules/cc/types/License.java
+++ b/src/main/java/com/rometools/modules/cc/types/License.java
@@ -1,41 +1,36 @@
 /*
  * LicenseEnumeration.java
- *
+ * 
  * Created on November 20, 2005, 3:20 PM
- *
- * This library is provided under dual licenses.
- * You may choose the terms of the Lesser General Public License or the Apache
- * License at your discretion.
- *
- *  Copyright (C) 2005  Robert Cooper, Temple of the Screaming Penguin
- *
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * 
+ * This library is provided under dual licenses. You may choose the terms of the Lesser General
+ * Public License or the Apache License at your discretion.
+ * 
+ * Copyright (C) 2005 Robert Cooper, Temple of the Screaming Penguin
+ * 
+ * 
+ * This library is free software; you can redistribute it and/or modify it under the terms of the
+ * GNU Lesser General Public License as published by the Free Software Foundation; either version
+ * 2.1 of the License, or (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
+ * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * 
+ * You should have received a copy of the GNU Lesser General Public License along with this library;
+ * if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307 USA
+ * 
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
  */
 package com.rometools.modules.cc.types;
 
@@ -45,6 +40,9 @@ import java.util.Map;
 import java.util.StringTokenizer;
 import java.util.concurrent.ConcurrentHashMap;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import com.rometools.rome.feed.impl.EqualsBean;
 import com.rometools.rome.feed.impl.ToStringBean;
 
@@ -56,29 +54,30 @@ public class License {
 
     private static final String CC_START = "http://creativecommons.org/licenses/";
     private static final Map<String, License> lookupLicense = new ConcurrentHashMap<String, License>();
+    private static final Logger LOG = LoggerFactory.getLogger(License.class);
     public static final License NO_DERIVS = new License("http://creativecommons.org/licenses/nd/1.0/", new Behaviour[0], new Behaviour[] {
-            Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION });
+            Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION});
     public static final License NO_DERIVS_NONCOMMERCIAL = new License("http://creativecommons.org/licenses/nd-nc/1.0/",
-            new Behaviour[] { Behaviour.NONCOMMERCIAL }, new Behaviour[] { Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION });
-    public static final License NONCOMMERCIAL = new License("http://creativecommons.org/licenses/nc/1.0/", new Behaviour[] { Behaviour.NONCOMMERCIAL },
-            new Behaviour[] { Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION });
-    public static final License SHARE_ALIKE = new License("http://creativecommons.org/licenses/sa/1.0/", new Behaviour[] { Behaviour.COPYLEFT },
-            new Behaviour[] { Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION });
-    public static final License SHARE_ALIKE_NONCOMMERCIAL = new License("http://creativecommons.org/licenses/nc-sa/1.0/", new Behaviour[] { Behaviour.COPYLEFT,
-            Behaviour.NONCOMMERCIAL }, new Behaviour[] { Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION });
-    public static final License SHARE_ALIKE_ATTRIBUTION = new License("http://creativecommons.org/licenses/by-sa/2.5/", new Behaviour[] { Behaviour.COPYLEFT,
-            Behaviour.ATTRIBUTION }, new Behaviour[] { Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION });
+            new Behaviour[] {Behaviour.NONCOMMERCIAL}, new Behaviour[] {Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION});
+    public static final License NONCOMMERCIAL = new License("http://creativecommons.org/licenses/nc/1.0/", new Behaviour[] {Behaviour.NONCOMMERCIAL},
+            new Behaviour[] {Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION});
+    public static final License SHARE_ALIKE = new License("http://creativecommons.org/licenses/sa/1.0/", new Behaviour[] {Behaviour.COPYLEFT}, new Behaviour[] {
+            Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION});
+    public static final License SHARE_ALIKE_NONCOMMERCIAL = new License("http://creativecommons.org/licenses/nc-sa/1.0/", new Behaviour[] {Behaviour.COPYLEFT,
+            Behaviour.NONCOMMERCIAL}, new Behaviour[] {Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION});
+    public static final License SHARE_ALIKE_ATTRIBUTION = new License("http://creativecommons.org/licenses/by-sa/2.5/", new Behaviour[] {Behaviour.COPYLEFT,
+            Behaviour.ATTRIBUTION}, new Behaviour[] {Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION});
     public static final License SHARE_ALIKE_NONCOMMERCIAL_ATTRIBUTION = new License("http://creativecommons.org/licenses/by-nc-sa/2.5/", new Behaviour[] {
-            Behaviour.COPYLEFT, Behaviour.ATTRIBUTION, Behaviour.NONCOMMERCIAL }, new Behaviour[] { Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION,
-            Behaviour.REPRODUCTION });
+            Behaviour.COPYLEFT, Behaviour.ATTRIBUTION, Behaviour.NONCOMMERCIAL}, new Behaviour[] {Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION,
+            Behaviour.REPRODUCTION});
     public static final License NONCOMMERCIAL_ATTRIBUTION = new License("http://creativecommons.org/licenses/by-nc/2.5/", new Behaviour[] {
-            Behaviour.ATTRIBUTION, Behaviour.NONCOMMERCIAL }, new Behaviour[] { Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION });
+            Behaviour.ATTRIBUTION, Behaviour.NONCOMMERCIAL}, new Behaviour[] {Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION});
     public static final License NONCOMMERCIAL_ATTRIBUTION_NO_DERIVS = new License("http://creativecommons.org/licenses/by-nc-nd/2.5/", new Behaviour[] {
-            Behaviour.ATTRIBUTION, Behaviour.NONCOMMERCIAL }, new Behaviour[] { Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION });
-    public static final License ATTRIBUTION_NO_DERIVS = new License("http://creativecommons.org/licenses/by-nd/2.5/",
-            new Behaviour[] { Behaviour.ATTRIBUTION }, new Behaviour[] { Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION });
-    public static final License ATTRIBUTION = new License("http://creativecommons.org/licenses/by/2.5/", new Behaviour[] { Behaviour.ATTRIBUTION },
-            new Behaviour[] { Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION });
+            Behaviour.ATTRIBUTION, Behaviour.NONCOMMERCIAL}, new Behaviour[] {Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION});
+    public static final License ATTRIBUTION_NO_DERIVS = new License("http://creativecommons.org/licenses/by-nd/2.5/", new Behaviour[] {Behaviour.ATTRIBUTION},
+            new Behaviour[] {Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION});
+    public static final License ATTRIBUTION = new License("http://creativecommons.org/licenses/by/2.5/", new Behaviour[] {Behaviour.ATTRIBUTION},
+            new Behaviour[] {Behaviour.DERIVATIVE, Behaviour.DISTRIBUTION, Behaviour.REPRODUCTION});
     private final String uri;
     private final Behaviour[] permits;
     private final Behaviour[] requires;
@@ -120,7 +119,7 @@ public class License {
                         }
                     }
                 } catch (final Exception e) {
-                    e.printStackTrace();
+                    LOG.error("Error", e);
                 }
             }
         }
diff --git a/src/main/java/com/rometools/modules/georss/GeoRSSModule.java b/src/main/java/com/rometools/modules/georss/GeoRSSModule.java
index 0dcb1ae..2895c02 100644
--- a/src/main/java/com/rometools/modules/georss/GeoRSSModule.java
+++ b/src/main/java/com/rometools/modules/georss/GeoRSSModule.java
@@ -1,22 +1,21 @@
 /*
  * Copyright 2006 Marc Wick, geonames.org
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
  */
 package com.rometools.modules.georss;
 
 import org.jdom2.Namespace;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.rometools.modules.georss.geometries.AbstractGeometry;
 import com.rometools.modules.georss.geometries.Point;
@@ -35,6 +34,8 @@ public abstract class GeoRSSModule extends ModuleImpl implements Cloneable {
 
     private static final long serialVersionUID = 1L;
 
+    private static final Logger LOG = LoggerFactory.getLogger(GeoRSSModule.class);
+
     protected AbstractGeometry geometry;
 
     public static final String version = "0.9.8";
@@ -118,6 +119,7 @@ public abstract class GeoRSSModule extends ModuleImpl implements Cloneable {
 
     /*
      * (non-Javadoc)
+     * 
      * @see com.rometools.rome.feed.CopyFrom#copyFrom(java.lang.Object)
      */
     @Override
@@ -127,7 +129,7 @@ public abstract class GeoRSSModule extends ModuleImpl implements Cloneable {
         try {
             geometry = (AbstractGeometry) geometry.clone();
         } catch (final CloneNotSupportedException ex) {
-            ex.printStackTrace();
+            LOG.error("Error", ex);
         }
     }
 
@@ -140,7 +142,7 @@ public abstract class GeoRSSModule extends ModuleImpl implements Cloneable {
             }
             return retval;
         } catch (final Exception ex) {
-            ex.printStackTrace();
+            LOG.error("Error", ex);
         }
         throw new CloneNotSupportedException();
     }
diff --git a/src/main/java/com/rometools/modules/opensearch/impl/OpenSearchModuleImpl.java b/src/main/java/com/rometools/modules/opensearch/impl/OpenSearchModuleImpl.java
index 6a21dc6..a0a0f03 100644
--- a/src/main/java/com/rometools/modules/opensearch/impl/OpenSearchModuleImpl.java
+++ b/src/main/java/com/rometools/modules/opensearch/impl/OpenSearchModuleImpl.java
@@ -1,16 +1,13 @@
 /*
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
  */
 package com.rometools.modules.opensearch.impl;
 
@@ -18,6 +15,9 @@ import java.io.Serializable;
 import java.util.LinkedList;
 import java.util.List;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import com.rometools.modules.opensearch.OpenSearchModule;
 import com.rometools.modules.opensearch.entity.OSQuery;
 import com.rometools.rome.feed.CopyFrom;
@@ -29,6 +29,7 @@ import com.rometools.rome.feed.module.ModuleImpl;
  */
 public class OpenSearchModuleImpl extends ModuleImpl implements OpenSearchModule, Serializable {
     private static final long serialVersionUID = 1L;
+    private static final Logger LOG = LoggerFactory.getLogger(OpenSearchModuleImpl.class);
     private int totalResults = -1;
     private int startIndex = 1;
     private int itemsPerPage = -1;
@@ -129,6 +130,7 @@ public class OpenSearchModuleImpl extends ModuleImpl implements OpenSearchModule
 
     /*
      * (non-Javadoc)
+     * 
      * @see com.rometools.rome.feed.CopyFrom#copyFrom(java.lang.Object)
      */
     @Override
@@ -142,13 +144,14 @@ public class OpenSearchModuleImpl extends ModuleImpl implements OpenSearchModule
             try {
                 getQueries().add((OSQuery) q.clone());
             } catch (final CloneNotSupportedException e) {
-                e.printStackTrace();
+                LOG.error("Error", e);
             }
         }
     }
 
     /*
      * (non-Javadoc)
+     * 
      * @see com.rometools.rome.feed.CopyFrom#getInterface()
      */
     @Override
diff --git a/src/main/java/com/rometools/modules/sse/modules/Conflict.java b/src/main/java/com/rometools/modules/sse/modules/Conflict.java
index 1c7048a..3f4fb46 100644
--- a/src/main/java/com/rometools/modules/sse/modules/Conflict.java
+++ b/src/main/java/com/rometools/modules/sse/modules/Conflict.java
@@ -1,22 +1,22 @@
 /*
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
  */
 
 package com.rometools.modules.sse.modules;
 
 import java.util.Date;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import com.rometools.rome.feed.CopyFrom;
 import com.rometools.rome.feed.rss.Item;
 
@@ -26,6 +26,8 @@ import com.rometools.rome.feed.rss.Item;
 public class Conflict extends SSEModule {
     private static final long serialVersionUID = 1L;
 
+    private static final Logger LOG = LoggerFactory.getLogger(Conflict.class);
+
     public static final String CONFLICTS_NAME = "conflicts";
 
     public static final String NAME = "conflict";
@@ -69,7 +71,7 @@ public class Conflict extends SSEModule {
             conflict.conflictItem = (Item) conflictItem.clone();
         } catch (final CloneNotSupportedException e) {
             // should not happen
-            e.printStackTrace();
+            LOG.error("Error", e);
         }
     }
 
diff --git a/src/main/java/com/rometools/modules/sse/modules/SSEModule.java b/src/main/java/com/rometools/modules/sse/modules/SSEModule.java
index b7e1df4..ad5c7db 100644
--- a/src/main/java/com/rometools/modules/sse/modules/SSEModule.java
+++ b/src/main/java/com/rometools/modules/sse/modules/SSEModule.java
@@ -1,16 +1,13 @@
 /*
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
  */
 package com.rometools.modules.sse.modules;
 
@@ -19,6 +16,8 @@ import java.util.HashSet;
 import java.util.Set;
 
 import org.jdom2.Namespace;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.rometools.rome.feed.CopyFrom;
 import com.rometools.rome.feed.module.Module;
@@ -30,6 +29,8 @@ import com.rometools.rome.feed.module.Module;
 public abstract class SSEModule implements Module {
     private static final long serialVersionUID = 1L;
 
+    private static final Logger LOG = LoggerFactory.getLogger(SSEModule.class);
+
     public static final String SSE_SCHEMA_URI = "http://www.microsoft.com/schemas/rss/sse";
 
     // a default prefix to use for sse tags
@@ -61,11 +62,9 @@ public abstract class SSEModule implements Module {
             clone = this.getClass().newInstance();
             clone.copyFrom(this);
         } catch (final InstantiationException e) {
-            // TODO: use logging
-            e.printStackTrace();
+            LOG.error("Error", e);
         } catch (final IllegalAccessException e) {
-            // TODO: use logging
-            e.printStackTrace();
+            LOG.error("Error", e);
         }
         return clone;
     }