I think it was “smash’s world“, the blog of Ben Guild, that was first to report on details of how to log into Google’s new Jabber server.
The instructions are pretty easy, and you can connect using Apple’s iChat (as you can see).
Surprising to me was the availability of video chat.
Even more surprising, multi-video-chat!
I spent a while video chatting with Iain last night, and it worked exactly the same as iChat in terms of experience and quality.
Jabber uses XML at its base, and is almost obscenely expandable w.r.t. functionality.
I hope we see some of that promise shine through in future iterations of iChat.