Did you guys see this?

Bob is good. This is really good stuff for RDFa.

http://www.snee.com/bobdc.blog/2008/03/accessibility_problems_with_mi.html

If Massachusetts pursues enriching our content, RDFa seems a more  
likely candidate. We prefer to adopt things that have been created and  
promulgated by standards bodies: they are more stable, the  
deliberative process surfaces and resolves problems beforehand, and  
are the only reliable basis for interoperability.

-Elias