<http://schema.org/description>
"Today Facebook announced the release of a marketplace app for its Preferred Marketing Developer effort.\r\n\r\nFacebook's Preferred Marketing Developer program was constructed to discover ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/facebook/2012/12/10/facebook-expands-its-preferred-marketing-developer-program-with-a-marketplace-to-connect-businesses-and-vendors/>