What would be awesome is if Trillian supported some sort of bridging, to allow you to start a conference with ICQ, AIM, MSN and Yahoo users all in one.

Now that would be a killer app.

The only drawback is that a Trillian user would have to act as the medium between the parties. This would be a problem if the Trillian user wanted to turn off his computer but the others in the chat wanted to continue.

Honestly, though, it completely surprises me that the various IM clients haven't learned how to play nice with each other and settled on an interoperability standard. We should have had all these capabilities a long long time ago.