I know what Ragna is talking about.
For a short time, there was this chatroom engine that Fuzz had installed at TFF, that people could use to chat with. It wasn't a Java IRC room or anything, but it was like a chatroom... thing.

It wasn't MSN or AIM. It used to be on the navigational header, but it's been lost in transition. I'll have to talk to Fuzz to see if he can bring it back.

Although really, at this point in time, everyone uses MSN and/or AIM. If the TFF Chat was brought back, what was the point of creating the IM address book sticky thread? -_-;