public function getNamedUsersList($url)
    {
        $out = '';
        $conditions = ['and',
            [Activity::tableName() . '.anonymous' => 0],
            ['is not', 'user_id', null],
            ['like', 'url', $url . '%', false],
            ['>=', Activity::tableName() . '.updated_at', time() - 5 * 60]
        ];

        if (!Podium::getInstance()->user->isGuest) {
            $this->_guest = false;
            $me = User::findMe();
            $conditions[] = ['!=', 'user_id', $me->id];
            if (!empty($me->meta) && $me->meta->anonymous == 0) {
                $out .= $me->podiumTag . ' ';
            } else {
                $this->_anon = true;
            }
        }

        $users = Activity::find()
                    ->joinWith(['user'])
                    ->where($conditions);
        foreach ($users->each() as $user) {
            $out .= $user->user->podiumTag . ' ';
        }

        return $out;
    }