Facebook Chat

is most excited to discover Adium's facebook chat integration!

Edit: it's worth noting it does LJ chat too, if you're so inclined. :)
Well, the plug-in is just emulating what the web browser does rather than being a proper protocol so that's not too surprising. They're harassing FB to actually open the thing up. You'd think provinging Jabber^WXMPP access wouldn't be too much to ask?