Adium X has been updated to .7. It’s currently my favorite multi-service IM client for Mac.
The 0.7 update includes a major revamp of the contact list, improved group chat support, contact grouping, Rendezvous support and numerous other additions and improvements. Adium supports all the major instant messaging services — AIM, MSN, Yahoo, Jabber, ICQ, and more — and features an attractive, customizable interface.