Trillian has been quite a popular instant messaging application on many platforms. Mac, PC and Linux all have desktop versions. The only mobile implementation so far has been on the iPhone. That is, until now. Trillian has announced they are going to be bringing a full blown multi platform instant messaging client to BlackBerry. It's not released as of yet but, you can sign up to be notified when it does indeed become available. Looks pretty impressive from the screenshots they have displayed. Shout out to dumb4ever for letting us know about it in the CrackBerry forums.