Free, online book on Knowledge Representation. If anyone creates a script to turn it into an ePub, RSVP.
A particularly good set of lectures on the Semantic Web.
One to watch. DBpedia already extracts a lot of data from Wikipedia. This should improve things, but I doubt it’ll be a complete replacement for some time.
RDF Mashup Library for JS
The arguments for, against and between using RDFa or HTML5′s microdata format.
Talis’ take on representing RDF in JSON. Still a couple of open issues, but a good basic and minimal representation.
Markup detailed product information enabling search engines to display more rich snippets (e.g. price, stock, reviews) in search pages.
HTML5s meta tag can now include pre-defined names with specific semantics. This article provides a few examples of their use. See also, the spec.
Google’s notes on semantic & structured markup using microformats and RDFa to enhance content.
Resources, pointers, guides, links, discussion and tutorials about linked data.
Some interesting uses and discussion of linked open data.
A frame-based syntax for OWL2 ontologies.
US Government releasing data as RDF Triples sw rdf triples statements