protected function getRandamYachoName()
 {
     $yachoNameStrings = Doctrine::getTable('SnsConfig')->get('op_tori_yacho_picture_plugin_search_word_list', opToriYachoPicturePluginToolkit::getYachoNameList());
     $toriList = opToriYachoPicturePluginToolkit::convertStrings2Array($yachoNameStrings);
     $key = array_rand($toriList);
     return $toriList[$key];
 }