AOL just updated their instant messaging client, AIM to 6.0. This major update features grouped IMs, buddy icons, smilies, wallpapers, offline messaging, message logging, and much more. A lot of bug fixes are present in this version too.
AOL writes "AIM® 6.0 is the next generation of instant messaging software. We listened to your requests and added lots of new features. Plus, we streamlined the software to make sure it"s fast enough to keep up with you. Install AIM 6.0 and never look back."