Anybody can share some light on companies that uses semantic web technologies? Currently at university have a semantic web class but I am finding it difficult where the use case are to create value for business or startup.
Similarly, Google Corporate Contacts extracts RDF from web pages (but can also use JSON microdata).
W3C's newly published open social standard is based on RDF (as JSON-LD) I believe.
RDF and SPARQL has lots of uses in libraries and bibliographic apps such as citation managers, as well as in publication of open data, in particular medical and bio informatics data.
Dublin Core (as RDF) is frequently used for standard document metadata, for example in PDF.