function getAlterOrder()

    {

        switch ($this->aCurrent['sorting']) {

            case 'featured':

                return array('order' => ' ORDER BY `bx_persons_data`.`featured` DESC ');

            case 'recommended':

                return array('order' => ' ORDER BY RAND() ');

            case 'none':

                return array();

            case 'active':

                return array('order' => ' ORDER BY `sys_accounts`.`logged` DESC ');

            case 'online':

                return array('order' => ' ORDER BY `sys_sessions`.`date` DESC ');

            case 'last':

            default:

                return array('order' => ' ORDER BY `bx_persons_data`.`added` DESC ');

        }

    }

recommended means  random records.