RDF Site Summary (RSS) is a lightweight multipurpose extensible metadata description and syndication format. RSS is an XML application, conforms to the W3C's RDF Specification and is extensible via XML-namespace and/or RDF based modularization.
This is my proposal for a kinder, gentler HTML 5. The new language I am proposing is not totally compatible with HTML 4. But HTML 4 was not totally compatible with HTML 3, and XHTML would not have been totally compatible anyway, so that's ok.