microformats, rdf or microdata

Question

Is there any difference between using one of this technologies?

I\'m building now a site using HTML5, and I\'m having hard time to decide which one of them to use. I

Answer 1

RDFa -> more resources (blank nodes, CURIE etc..)

Microformarts -> simply and popular, minor resources and no support to custom vocabularies

Microdata -> cool itemref resource, very very new...