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YouTube - Intro to the Semantic Web
Short introduction to the semantic web by Manu Sporny from digitalbazaar.com.
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Resource Description Framework (RDF) / W3C Semantic Web Activity
RDF is a method for expressing semantic information. RDF/XML is probably the most common syntax for RDF.
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RDFa
RDFa is a set of extensions to XHTML that allows RDF to be encoded within an XHTML page. The wiki on this site provides links to several examples of RDF in use.
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Social Graph API - Google Code
Google indexes the public Web for XHTML Friends Network (XFN), Friend of a Friend (FOAF).
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google-sgnodemapper - Google Code
Google tool for creating canonical URLs from the various forms you may enter for your account on a social networking site. Has a link to a demo site. (Note: sgn:// is Social Graph Node)
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XFN - XHTML Friends Network
A microformat specification. The Getting Started link shows you how to add XFN to a web page.
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Mike's Musings » Operator
Operator is an extension for Firefox that adds the ability to interact with semantic data on web pages, including microformats, RDFa and eRDF.
