SKOS is an area of work developing specifications and standards to support the use of knowledge Organization systems (KOS) such as thesauri, classification schemes, subject heading systems and taxonomies within the framework of the Semantic Web
RDFa (or Resource Description Framework attributes) is a set of extensions to XHTML being proposed by W3C. RDFa uses attributes from XHTML's meta and link elements, and generalises them so that they are usable on all elements. This allows you to annotate
RDFa is a specification for attributes to be used with languages such as HTML and XHTML to express structured data. The rendered, hypertext data of XHTML is reused by the RDFa markup, so that publishers don't need to repeat significant data in the documen
We introduce RDFa, which provides a set of HTML attributes to augment visual data with machine-readable hints. We show how to express simple and more complex datasets using RDFa, and in particular how to turn the existing human-visible text and links into
<sep/>Friend-of-A-Friend") description of yourself. You can read more about FOAF in Edd Dumbill's "XML Watch: Finding friends with XML and RDF" article, ...