|The Initiative||Learn More||Consume|
Launched on June 2, 2011, Schema.org is an initiative Bing, Google and Yahoo! to provide a vocabulary (a collection of concepts and their properties) to be used by web masters to markup web content in ways recognized by major search providers. Search engines will rely on this markup to improve the display of search results, making it easier for people to find the right pages they search for.
While creating Schema.org markup from plain HTML might be painful for beginners and time consuming for everybody, this wiki will help you to easy get Schema.org markup for the most used concepts of Schema.org.
Extracting Semantic Annotations
Typically, applications need to extract semantic annotations from the web pages and use them to perform artificial reasoning.
Microdata extractor is a REST web service to extract RDF data from Microdata annotations and provide the semantic information as N-Triples, N3 and JSON. The service conforms with the Microdata2RDF specification at W3C, but the generation algorithm may be different from the one proposed by the specification. The service is powered by node.js and uses jsdom library.
More information on endpoint, usage and limitations at: 
Extracting semantic annotations from Microdata
RDFa extractor is a REST web service to extract RDF data from RDFa Lite annotations and provide the semantic information as N-Triples, N3 and JSON. The service is powered by node.js and uses jsdom library.
Extracting semantic annotations from RDFa Lite
Some Popular Pages
What you can do
Solve everyday annotation problems, debate on discussion pages and document your solutions on the wiki. Start concrete discussions helping others to understand: how to use, what to use, where to use and who uses these concepts. Spread the word – blog it, bulletin board it, tell your friends.Write and share tools (link them up on the wiki). Inspire others with what you build.