Google Talk Claims Openness, Lacks S2S Support
rm writes "This LiveJournal entry by Nugget quite well sums up the disappointment in Google Talk among many Jabber users, caused by the service's complete lack of XMPP server-to-server communication support: '...Google has uncharacteristically missed the real strength of the Jabber design. Despite all their self-congratulation about open communications they've only embraced the smaller, less important aspect of the Jabber openness.'"
Their client may not run on Linux yet but you can use Google Talk on Linux using gAIM or another Jabber complient client: http://www.google.com/talk/otherclients.html
Leaders in the jabber community have made it fairly clear that s2s support just hasn't been coded yet. Its on its way.
Well, from the FAQ on Google talk page you can read:
"4. What other communication services will you federate with?
We look forward to federating with any service provider who shares our belief in enabling user choice and open communications. We do believe, however, that it is important to balance openness with ensuring that we maintain a safe and reliable service that protects user privacy and blocks spam and other abuses."
They will be open, but in a slow way and only if your server can be trusted!