Ok, I was able to subscribe several buddies
@gmail.com just now, and talk to them, all of this from my
Server-to-server is now open with GTalk.
Let the games begin.
(kudos to Rusty Shackleford who pointed this to me)
update: it seems that ralphm beat me to it. Behold the power of mimir (speaking of which, I got to resubscribe to it...).