<http://schema.org/topics>
"Apps and Software,Dev &amp; Design,foodspotting,Foursquare,instagram,Mobile,Path,Social Media,SoundTracking,Uncategorized,untappd"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2012/06/29/foursquare-connected-apps/?WT.mc_id=en_foursquare>