<http://schema.org/image>
<http://rack.0.mshcdn.com/media/ZgkyMDEyLzEyLzA0LzU5L2lzZmFjZWJvb2t3LmFZWi5qcGcKcAl0aHVtYgkxMjAweDYyNyMKZQlqcGc/3b659980/8ca/is-facebook-worth-50-billion-poll--ed08a2cd95.jpg>
<http://mashable.com/2011/01/02/is-facebook-worth-50-billion-poll/>