<http://schema.org/image>
<http://rack.2.mshcdn.com/media/ZgkyMDEyLzEyLzA0LzhmL2lzcGludGVyZXN0LmQ0ZS5qcGcKcAl0aHVtYgkxMjAweDYyNyMKZQlqcGc/d81c3ac8/191/is-pinterest-pocketing-revenue-by-tracking-user-generated-pins--3755f09e8d.jpg>
<http://mashable.com/2012/02/08/pinterest-revenue/>