<http://schema.org/description>
"Foursquare has seen phenomenal growth over usage of its service. This week, it announced that\u00A0it counted its 3 billionth check-in. Not bad for a service with just over 25 million users ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/location/2012/11/21/foursquare-has-its-3-billionth-check-in-seeing-growth-of-x/>