Tim Berners Lee's opening keynote covered the Semantic Web and Web Services according to Edd Dumbill's coverage.
The TAP people are semantically marking up the entire web with SemTag.
FOAFFinger is finger using FOAF and Rendezvous.
Then there's also notes taken during the first day.
SearchEngine Watch's Virtually Attending the 12th IW3C2 Conference has links to the papers being presented.