Over the years I've amassed a large number instant messaging programs, starting with ICQ in the late 90's. For some strange reason I still have my ICQ # memorized... 5288067. Weird. Anyway..
At one point in time I wouldn't want to admit that my primary reason for having an instant messaging program was for communicating with guild mates in early MMO's like Ultima Online. In those days you really didn't have a reliable way to communicate with your friends from all over the world as in-game messaging was notoriously awful. Remember "Communication Crystals?" Wait... Am I getting side-tracked again? Ok, instant messaging - right!
But later on, say, early 2000's; instant messaging became useful for other reasons. I still feel funny using chat clients for business purposes at work, though.
The problem is that as more and more people got online, more and more IM services became available. Trillian became my solution to that problem by consolidating my services to one client.
Fast forward to the age of iOS.
Trillian has an iPod Touch / iPhone app that I have held in high regards for some time now. Unfortunately they have yet to come out with an iPad native version of their client.
Behold, imo instant messenger.
imo is free, it works reliably and to top it all off: it now provides Steam support.
Yes, now you can chat with noobs that are logged into Steam from your iPad.
Sorry, Trillian. It's been a good 7 years or so. But I'm leaving you for a younger, better looking application.