If you are a Mac user and run iChat, then you have to check out this new iChat plug-in called Chax. It allows you to use tabs for all of your chats in one chat window. It also have a ton of preferences that make iChat a much better application than it already is.
Download here now, thank me later.
P.S. If any of you already knew about this but didn’t tell the rest of us, then you’re gonna end up here!