RDFa wiki

Thanks to the CC sysadmins, it's live:

http://rdfa.info/wiki/

Folks on the TF, register your accounts, and I'll upgrade you to admin 
status as soon as you let me know your username (you can do so in 
private email.)

Manu, you asked for it: you've got the baton on setting up a basic 
structure for the wiki :)

-Ben