public function getDbUsers()
    {
        $user = new Application_Model_DbTable_User();
        $userList = $user->fetchAll(null, 'name');
        foreach ($userList as $user) {
            $this->addUser(new Application_Model_User(
                $user->name, sprintf('http://twitter.com/%s', $user->twitter)));
        }
        return $this->getUsers();
    }