<http://schema.org/description>
"A lot of people use Google's search engine to find direct links to iOS applications. It used to be that queries such as 'Twitter iPhone' would result in Google showing direct links ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/google/2013/04/02/dear-google-where-did-all-the-itunes-links-to-ios-apps-go/>