I use Adium as my IM chat client because it allows me to chat across networks (AIM MobileMe, Yahoo!, MSN, Google Talk, Jabber, ICQ, and so many more) from one app.
Somehow, my MSN Messenger contact info must have gotten out, because I began to get hit every 5 to 10 minutes on MSN with a [...] type="text/javascript">SHARETHIS.addEntry({ title: "Stopping MSN Messenger SPAM in Adium", url: "http://www.daynw.com/stopping-msn-messenger-spam-in-adium/" });>