I'm 10 days into my ownership of the HTC Incredible, and have been trying to figure out how to get the official AIM app to log me into both AIM and Facebook Chat? Is this possible? If so, how?
You could also use the Meebo IM app, it allows you to log into a bunch of different IM services at one time (AIM, Facebook Chat, Google Talk, etc) all in one application. You can also access it from the web. I don't even install AIM and the different IM clients on my desktop anymore.