I just got it cause my MSN stopped working ( >) and so far it's awesome. I use the three big ones, MSN, AIM, and Yahoo!, and Trillian puts 'em all in one, along with ICQ if you have that. It's very nice....Not a log of plugins and skins, but that's cause no one knows what it is. Seriously, if you use two or more programs for IMing....Get Trillian!!
Trillian have problem displaying name and info in your profile in your firend's messenger, so many people find it annoying.
I've used Trillian for a long time. How do you think I'm on 3 different IM systems? We can be triple buddies!