something really cool i just discovered, while fooling around with my macs chat client adium. If you go into your preferances you’ll see an option for adding new accounts.. When adding a new account, simply select ‘google talk’ & then input your email address as username & subsequent gmail account password.
Then, as if magic, all your gmail buddies (that you prob. chat to @ work) are magically appearing online with all your other msn, yahoo, .mac, jabber friends..
I am guessing the same goes for similar PC apps.