The major topics on the 5th XMPP Summit were Jingle, and XMPP as a complementary protocol next to HTTP for building social networking services, as stpeter briefly mentioned. While I think that the consensus on OAuth over XMPP, was very important, I think we also settled on a good set of best practices for federating social networks using XMPP Publish Subscribe.
This particular topic has had my full attention over the last year or so, and it is about time that I start writing about that, explaining the afore mentioned best practices in their context. As this covers a lot of ground, I'd like to make a series out of it, each detailing a particular aspect.
Topics that will come by include: the subscribable unit and how notifications are generated, payload formats, discovery, local representation and implementation strategies.