The W3C’s RDF-in-HTML task force has been wrestling with the problem developing recommended ways to embed RDF content in XHTML documents. I think that this is incredibly important as many of the use cases for the Semantic Web can benefit from documents that have both human and machine readable portions. RDF-in-HTML is actually a joint task force of the Semantic Web Best Practices and Deployment and HTML Working Groups. Last week, the task force released a new version of the primer on RDF/A, is a set of attributes used to embed RDF in XHTML. It’s a good document to read to get an idea of how this will work.