<http://schema.org/description>
"Here's a brilliantly simple idea. Agora is a service built on the Foursquare API, designed to match you up with likeminded folk when you check in at a location.\r\n\r\nLet's say you arrive ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2011/03/17/agora-helps-you-meet-new-foursquare-friends-when-you-check-in/>