alt Hacker NewsGoogle Talk - and it was an actual federating XMPP server, in contrast to Facebook which merely allowed you to login with an XMPP client.
Google Talk - and it was an actual federating XMPP server, in contrast to Facebook which merely allowed you to login with an XMPP client.
There was a point where Google and Facebook supported external clients, and then within the same year both Google and Facebook closed up to any external clients, then ultimately ditching XMPP.