/*

$google=false;
if(eregi("googlebot",$_SERVER['HTTP_USER_AGENT']))$google=true;
if(eregi("yandexbot",$_SERVER['HTTP_USER_AGENT']))$google=true;

$nn = md5("837sgsa".$_SERVER['REMOTE_ADDR']);
if (!isset($_COOKIE[$nn]) && FILE!=="/announce.php" && $google==false)
{
     if (isset($_POST[$nn])){
         setcookie($nn, "yes");
         header("Location: http://твой_сайт.ру".$_SERVER['REQUEST_URI']);exit;
     }
     echo "<form id="f" method="post"><input type="hidden" name="'.$nn." value="a" />document.getElementById('f').submit();<input type="submit" value="Continue" /></form>";
     die();
}

*/