diff --git a/classes/Notice_prefs.php b/classes/Notice_prefs.php
new file mode 100644
index 0000000000..1bbf309da4
--- /dev/null
+++ b/classes/Notice_prefs.php
@@ -0,0 +1,172 @@
+<?php
+/**
+ * GNU social
+ *
+ * Data class for Notice preferences
+ *
+ * PHP version 5
+ *
+ * LICENCE: This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category  Data
+ * @package   GNUsocial
+ * @author    Mikael Nordfeldth <mmn@hethane.se>
+ * @copyright 2013 Free Software Foundation, Inc.
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link      http://www.gnu.org/software/social/
+ */
+
+class Notice_prefs extends Managed_DataObject
+{
+    public $__table = 'notice_prefs';       // table name
+    public $notice_id;                      // int(4)  primary_key not_null
+    public $namespace;                       // varchar(191)  not_null
+    public $topic;                           // varchar(191)  not_null
+    public $data;                            // text
+    public $created;                         // datetime   not_null default_0000-00-00%2000%3A00%3A00
+    public $modified;                        // timestamp   not_null default_CURRENT_TIMESTAMP
+
+    public static function schemaDef()
+    {
+        return array(
+            'fields' => array(
+                'notice_id' => array('type' => 'int', 'not null' => true, 'description' => 'user'),
+                'namespace' => array('type' => 'varchar', 'length' => 191, 'not null' => true, 'description' => 'namespace, like pluginname or category'),
+                'topic' => array('type' => 'varchar', 'length' => 191, 'not null' => true, 'description' => 'preference key, i.e. description, age...'),
+                'data' => array('type' => 'blob', 'description' => 'topic data, may be anything'),
+                'created' => array('type' => 'datetime', 'not null' => true, 'description' => 'date this record was created'),
+                'modified' => array('type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified'),
+            ),
+            'primary key' => array('notice_id', 'namespace', 'topic'),
+            'foreign keys' => array(
+                'notice_prefs_notice_id_fkey' => array('notice', array('notice_id' => 'id')),
+            ),
+            'indexes' => array(
+                'notice_prefs_notice_id_idx' => array('notice_id'),
+            ),
+        );
+    }
+
+    static function getNamespacePrefs(Notice $notice, $namespace, array $topic=array())
+    {
+        if (empty($topic)) {
+            $prefs = new Notice_prefs();
+            $prefs->notice_id = $notice->getID();
+            $prefs->namespace  = $namespace;
+            $prefs->find();
+        } else {
+            $prefs = self::pivotGet('notice_id', $notice->getID(), array('namespace'=>$namespace, 'topic'=>$topic));
+        }
+
+        if (empty($prefs->N)) {
+            throw new NoResultException($prefs);
+        }
+
+        return $prefs;
+    }
+
+    static function getNamespace(Notice $notice, $namespace, array $topic=array())
+    {
+        $prefs = self::getNamespacePrefs($notice, $namespace, $topic);
+        return $prefs->fetchAll();
+    }
+
+    static function getAll(Notice $notice)
+    {
+        try {
+            $prefs = self::listFind('notice_id', array($notice->getID()));
+        } catch (NoResultException $e) {
+            return array();
+        }
+
+        $list = array();
+        while ($prefs->fetch()) {
+            if (!isset($list[$prefs->namespace])) {
+                $list[$prefs->namespace] = array();
+            }
+            $list[$prefs->namespace][$prefs->topic] = $prefs->data;
+        }
+        return $list;
+    }
+
+    static function getTopic(Notice $notice, $namespace, $topic) {
+        return self::getByPK(array('notice_id' => $notice->getID(),
+                                            'namespace'  => $namespace,
+                                            'topic'      => $topic));
+    }
+
+    static function getData(Notice $notice, $namespace, $topic, $def=null) {
+        try {
+            $pref = self::getTopic($notice, $namespace, $topic);
+        } catch (NoResultException $e) {
+            if ($def === null) {
+                // If no default value was set, continue the exception.
+                throw $e;
+            }
+            // If there was a default value, return that.
+            return $def;
+        }
+        return $pref->data;
+    }
+
+    static function getConfigData(Notice $notice, $namespace, $topic) {
+        try {
+            $data = self::getData($notice, $namespace, $topic);
+        } catch (NoResultException $e) {
+            $data = common_config($namespace, $topic);
+        }
+        return $data;
+    }
+
+    /*
+     * Sets a notice preference based on Notice, namespace and topic
+     *
+     * @param  Notice  $notice    Which notice this is for
+     * @param  string  $namespace Under which namespace (pluginname etc.)
+     * @param  string  $topic     Preference name (think key in key-val store)
+     * @param  string  $data      Data to be put into preference storage, null means delete
+     *
+     * @return true if changes are made, false if no action taken
+     * @throws ServerException if preference could not be saved
+     */
+    static function setData(Notice $notice, $namespace, $topic, $data=null) {
+        try {
+            $pref = self::getTopic($notice, $namespace, $topic);
+            if (is_null($data)) {
+                $pref->delete();
+            } else {
+                $orig = clone($pref);
+                $pref->data = $data;
+                $pref->update($orig);
+            }
+            return true;
+        } catch (NoResultException $e) {
+            if (is_null($data)) {
+                return false; // No action taken
+            }
+        }
+
+        $pref = new Notice_prefs();
+        $pref->notice_id  = $notice->getID();
+        $pref->namespace  = $namespace;
+        $pref->topic      = $topic;
+        $pref->data       = $data;
+        $pref->created    = common_sql_now();
+        
+        if ($pref->insert() === false) {
+            throw new ServerException('Could not save notice preference.');
+        }
+        return true;
+    }
+}