LiveJournal will soon rollout a Jabber service to connect its over 10 million users and content generated on the service. LiveJournal users can authenticate against the service using their LiveJournal username and password to connect to their online friends and receive real-time alerts on new posts and comments. Users will also be able to post to LiveJournal using a special chat bot. The team plans to federate the service to other networks, allowing interoperability with users on Google Talk and other compatible clients.
The new service should be able to support Atom notifications over XMPP. Developers should be able to authenticate against the server and pull out a LiveJournal friends list, allowing anyone to pre-populate a feed aggregator with feeds from your online friends.