bhat hit it with firewalking yes yahoo does have an exploitable port 2 in fact port 5101 ana 5050 its the login and IMvironment prts both are highly exploitable for viewing others offline messeges any IMs and for stealings passes and email let alone knowing exactly where someone is and what is on their comp msn icq and aol all have similar exploits trick is to think how one of these babies works on your system .. lol