"VisBot/2.0 (Visvo.com Crawler; http:°www.visvo.com/bot.html; bot@visvo.com)"
strpos($_SERVER['HTTP_USER_AGENT'], 'Twiceler-0.9') !== false ||
strpos($_SERVER['HTTP_USER_AGENT'], 'ScoutJet') !== false ||
strpos($_SERVER['HTTP_USER_AGENT'], 'penthesilea/0.3') !== false ||
+ strpos($_SERVER['HTTP_USER_AGENT'], 'VisBot/2.0') !== false ||
strpos($_SERVER['HTTP_USER_AGENT'], 'Cityreview Robot') !== false) {
if (isset($_SESSION['uid']))
$_SESSION['robot'] = true;