Last year, Facebook had revealed that they were developing a Jabber/XMPP interface for Facebook Chat. If Process One is right, then the public unveiling of XMPP integration in Facebook Chat may not be too far away.

XMPP stands for Extensible Messaging and Presence Protocol and was developed by the Jabber open-source community in 1999. Google Talk is one of the most popular XMPP based instant messaging clients. Google Wave’s federation protocol is an open extension to XMPP.

Recently, Facebook Chat client was spotted by IMtrend’s bot. This indicates that Facebook has already deployed the XMPP software stack on chat.facebook.com. Once launched, you will be able to chat with Google Talk (and Orkut) friends using Facebook Chat. This would make XMPP the most popular IM protocol on the web and lend even more mass appeal to Facebook.

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