Trillian, Beejive, IM+ are the big players, I think they each have trial versions available. You may also want to check App World I don't know if anything new has been released lately but I've using BeeJive for years. Its ok.... Posted via BlackBerryForums.com Mobile
Facebook is a social networking site, founded in 2004. This is a list of features, can be found in Facebook, and technical characteristics of the site. Facebook chat is released into the Facebook user base. Users can only chat with their Facebook friends, and one to one basis, although users can chat with multiple friends, through a single chat interface. It is actually so great service for all.
There's an app that just came out a day or two ago, that is a free facebook chat. Check appworld for facebook related apps that are free and it should come up. If not then do a google search for "free facebook chat blackberry" and something should come up. If I find the name, I'll post back. I can't right now, I'm on the toilet at work lol! ;) Posted via BlackBerryForums.com Mobile