Update: Just like XMPP is slowly dying, Swissjabber has also kicked the bucket. Rest in peace, my friend.
If you’re Swiss and need to have a Google Talk alternative for your XMPP-based chat needs, consider Swissjabber.
I’ve created an account there and discontinued my Google Talk one, so if you want to contact me via XMPP, add psy-q@swissjabber.org.