<http://schema.org/headline>
"Foursquare vs Unsubscribe: Two CEOs duke it out over Twitter and YouTube"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2011/03/08/foursquare-vs-unsubscribe-two-ceos-duke-it-out-over-twitter-and-youtube/>