All of them are pretty good, but I use AIM because... everyone I know uses it. I will try Trillian some time, sounds sweet
. But I dont like AOL Instant Messanger - I use gaim (
gaim.sourceforge.net) One of the reasons is im on linux and the AIM beta for linux is alright, but GAIM has lots of fetures like PERL scrpits and stuff. Of course, I prefer IRC over everything, but IRC isint really IM ing unless you PM someone.