public static function logHit($link, $ref)
 {
     // create or update log
     $existing = FourOhFourLog::get()->filter(array('Referrer' => $ref, 'Link' => $link))->first();
     if ($existing) {
         $existing->Count = $existing->Count + 1;
         $existing->write();
     } else {
         $log = new FourOhFourLog();
         $log->Referrer = $ref;
         $log->Link = $link;
         $log->Count = 1;
         $log->write();
     }
 }