<http://schema.org/url>
<http://mashable.com/media/ZgkyMDEyLzEyLzA0Lzg1L3RoZXR3aXR0ZXJvLmFIQi5qcGcKcAl0aHVtYgkxMjAweDYyNyM/b51be6b7/3dc/the-twitter-of-2010-foursquare-as-next-year-s-breakout-hit-3ec2cb3206.jpg>
<http://mashable.com/2009/11/19/twitter-foursquare-2010/>