Hi Tom,
Great to see RDFa get a mention in your BarCamp presentation, but I wonder if I might clarify that RDFa is not limted to XHTML 2. I've written a post on the relationship between RDFa and XHTML 1 that might help explain some of this.
Thanks for a very interesting presentation!
Regards,
Mark
CEO, formsPlayer
http://www.formsPlayer.com | http://internet-apps.blogspot.com