Marking wont-fix; MozCC++ is under development in GSoC.

Ben writes:

Yes, here is mine :

http://www.w3.org/2006/07/SWD/RDFa/impl/js
http://www.w3.org/2006/07/SWD/RDFa/impl/js/rdfa.js

Not my best code because I had to inline a bunch of stuff from the
Tabulator project, but I think it's still the right starting point.

-Ben

There is also http://code.google.com/p/ubiquity-rdfa/ !

And Ben's RDFa parser.

The right thing to do is to investigate an alternate RDFa parser.

Other issue: rel=prefetch probably isn't RDFa

We should see if we can find a better RDFa implementation in the long-ish run.

Further problem: 

   var xml_ns_regex = /xmlns:([\S]+)="([\S]+)"/ig;

This doesn't handle 'whatever', only "whatever".

Should probably grow up and use XPath!

From a comment in the source:

if a document redefines a namespace prefix for a subsection of the document, the
last declaration probably wins for the entire document

That's somewhat sad.