public function tags($id = false)
    {
        if ($id) {
            $this->_id = $id;
        }
        if (strlen($this->_id) == 0) {
            throw new DataSift_Exception_InvalidData('Unable to get tags without an ID');
        }

        return $this->_user->get('pylon/tags', array('id' => $this->_id));
    }