Adium 1.4 released, now supports Twitter, IRC and more
The main feature additions are Twitter and IRC support, but the contact list has also been overhauled to support contacts in multiple groups and instant searching. There's also a new version of libpurple under the hood (this is the same library that powers Pidgin, Meebo and others), fewer bugs, faster performance and less memory usage.
Finally, true die hards can now get their hands on an Adium t-shirt! There's a nice white one that will go well with the majority of your gadgets.
Download Adium 1.4 for Mac OS X