<http://schema.org/description>
"Foursquare is building a new advertising product that will leverage users\u2019 check-in data and sell it to other businesses to help create targeted ads on external platforms, according ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/insider/2013/04/12/foursquare-reportedly-keen-to-offer-advertisers-check-in-data-for-targeted-ads-on-other-platforms/>