I was just reading on Slashdot about the new Google IM service, called Google Talk which is due to be announced tomorrow. They’re using the open source Jabber protocol, which is fantastic because this means that anyone on any system can use it on any client the supports Jabber! You rock Google!
How to get on:
Username: your gmail username (everything before the @gmail.com bit)
Password: your gmail password
Server: talk.google.com
That should be all you need. Just make sure that you don’t have encryption or any other fancy stuff turned on.
UPDATE: I have just been logged off, with the error “Not Allowed”, and I can’t log back in 
Also, Shane has just put up a pic I took of him on the Segway and a short video of me too.
