Adium users will find this amusing..I hope. Well, at least I found it amusing. It’s a cat imitating the tone for contacts going offline.
For non Adium OS X users, Adium is a multi-protocol IM client, where you can have MSN, Facebook, Google Talk and very soon, Twitter, all on a single client. Forget the rest of the IM clients, this is better, in my opinion of course.