I didn't read through the 400 some replies, but Safari 3 works fine for me. The other thing I noticed is that it went through all my book marks, found certain websites that had AIM bots attached to them, and automatically added them to my iChat.
Now I have this Prof Gilzot (??), WSJ (Wall street), ShareThisDotCom (Whatever that is), Spleak (??), Moviefone, and that's it.
This happened to me too, but i've only installed Safari 3 on Windows, on a machine at work, with no access to AIM or iChat or even any knowledge of my iChat login, so i dont think this is safari related.. I'm a little worried though :S What the hell added these to my iChat? :/