diff --git a/includes/common.php b/includes/common.php
index d0e9f43..1997ab6 100644
--- a/includes/common.php
+++ b/includes/common.php
@@ -119,10 +119,10 @@ $site_permissions = $site_info['permissions'];
 
 if ($site_permissions) {
     $site_is_private = (bool) $site_permissions['private'];
-    $site_disable_guest = (bool) $site_permissions['disable_guest'];
+    $site_disable_guests = (bool) $site_permissions['disable_guest'];
 } else {
     $site_is_private = false;
-    $site_disable_guest = false;
+    $site_disable_guests = false;
 }
 
 // CAPTCHA configuration
diff --git a/js/tag_input.js b/js/tag_input.js
new file mode 100644
index 0000000..9d623a3
--- /dev/null
+++ b/js/tag_input.js
@@ -0,0 +1,110 @@
+function htmlToElement(html) {
+    const template = document.createElement('template');
+
+    template.innerHTML = html.trim();
+
+    return template.content.firstChild;
+}
+
+function escapeHtml(unsafe) {
+    return unsafe
+        .replace(/&/g, "&")
+        .replace(/</g, "&lt;")
+        .replace(/>/g, "&gt;")
+        .replace(/"/g, "&quot;")
+        .replace(/'/g, "&#039;");
+}
+
+class TagsInput {
+    constructor(element, options = {}) {
+        this.element = element;
+        this.tags = [];
+        this.options = options
+
+        this.maxTags = options.maxTags || 10;
+        this.inputNode = null;
+        this.containerNode = null;
+    }
+
+    attach() {
+        this.element.style.display = 'none';
+
+        this.containerNode = htmlToElement('<div class="tags-input"></div>');
+        this.inputNode = htmlToElement('<input class="input" type="text" placeholder="10 tags maximum" value="" />');
+        this.containerNode.appendChild(this.inputNode);
+
+        this.element.parentNode.insertBefore(this.containerNode, this.element.nextSibling);
+
+        /* Handle addition and removal of tags via key-presses */
+        this.containerNode.addEventListener('keydown', this._handleInputKeyUp.bind(this));
+
+        /* Handle deletions by clicking the delete button */
+        this.containerNode.addEventListener('click', this._handleContainerClick.bind(this));
+    }
+
+    detach() {
+        this.tags.clear();
+        this.containerNode.remove();
+        this.element.style.display = 'inline-block';
+    }
+
+    updateHiddenInputValue() {
+        this.element.value = this.tags.join(',');
+    }
+
+    deleteTagNode(node) {
+        this.tags.splice(this.tags.indexOf(node.dataset.value.toLowerCase()), 1);
+        node.remove();
+
+        /* Below the limit? Make sure the input is enabled. */
+        if (this.tags.length < this.maxTags) {
+            this.inputNode.disabled = false;
+        }
+    }
+
+    addTag(tagValue) {
+        tagValue = tagValue.trim();
+
+        /* Tag value is probably not empty and we don't already have the same tag. */
+        if (tagValue !== '' && this.tags.indexOf(tagValue.toLowerCase()) === -1) {
+            this.tags.push(tagValue.toLowerCase());
+
+            this.inputNode.parentNode.insertBefore(
+                htmlToElement('<span class="tag is-info" data-value="' + escapeHtml(tagValue) + '">' + escapeHtml(tagValue) + '<span class="delete is-small" /></span>'),
+                this.inputNode
+            );
+
+            /* Too many tags, disable the input for now. */
+            if (this.tags.length >= this.maxTags) {
+                this.inputNode.disabled = true;
+            }
+        }
+    }
+
+    _handleInputKeyUp(evt) {
+        let tagValue = this.inputNode.value;
+
+        if (evt.key === 'Backspace' && tagValue === '') {
+            // Remove the child
+            if (this.inputNode.previousSibling) {
+                this.deleteTagNode(this.inputNode.previousSibling);
+
+                this.updateHiddenInputValue();
+            }
+        } else if (evt.key === ',') {
+            this.addTag(tagValue);
+
+            this.inputNode.value = ''
+            this.updateHiddenInputValue();
+
+            evt.preventDefault();
+        }
+    }
+
+    _handleContainerClick(evt) {
+        if (evt.target && evt.target.classList.contains('delete')) {
+            this.deleteTagNode(evt.target.closest('.tag'));
+            this.updateHiddenInputValue();
+        }
+    }
+}
diff --git a/theme/bulma/main.php b/theme/bulma/main.php
index 2c49f2d..6f8008d 100644
--- a/theme/bulma/main.php
+++ b/theme/bulma/main.php
@@ -1,10 +1,15 @@
 <link rel="stylesheet" href="theme/bulma/css/bulma-tagsinput.min.css"/>
 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
 <script src="theme/bulma/js/bulma-tagsinput.min.js"></script>
+<script src="/js/tag_input.js"></script>
 <script>
     function setupTagsInput() {
+
         const tagsInput = document.getElementById('tags-with-source');
-        new BulmaTagsInput(tagsInput, {
+
+        new TagsInput(tagsInput).attach();
+
+        /*new BulmaTagsInput(tagsInput, {
             allowDuplicates: false,
             caseSensitive: false,
             clearSelectionOnTyping: false,
@@ -25,7 +30,7 @@
             selectable: true,
             tagClass: 'is-info',
             trim: true,
-        });
+        });*/
     }
 
     if (document.readyState !== 'loading') {