[singpolyma3]

Facebook never offered federated XMPP. They did offer federated email for a short while.

[sseagull]

I seem to remember being able to chat with Facebook users from my personal server, but it doesn’t look like it was possible [1].

Actually, searching for this stuff made me sad :(

There are blog posts from Facebook still up about how they are using XMPP [2]. There are still notes out there on setting it up in Pidgin [3].

The internet has become a walled-off mess, and it makes me depressed to see such a powerful and wonderful technology abused like this.

[1] https://stackoverflow.com/questions/5052780/integrating-face...

[2] https://developers.facebook.com/blog/post/110/

[3] https://m.facebook.com/notes/socialblogr/how-to-setup-facebo...

PS: looking through the other posts on the fb developer blog (just changing the number in the url) is interesting.

[severak_cz]

They provided XMPP gate - it did not federated with other servers but you were able to use multi-account client (e.g. Pidgin) and have it everything in one window. I did exactly that.