intertwingly

Joe Hildebrand posted some thoughts about how Atom could integrate with XMPP (and therefore Jabber).

While I have now read Pub/sub, I am left with more questions than answers.

For starters, I think that Joe's post talks about authentication at a different level than I mean it.  From what I understand of Jabber, a client established a socket connection to the server over which a number of discrete messages from a variety of original sources may flow.  Authenticating the original source is what I am after.  Something closer to pub/sub affiliations.

At an even more basic level, I have a question as to whether the client must be online at the time the entry is published.