<http://schema.org/image>
<http://rack.2.mshcdn.com/media/ZgkyMDEyLzEyLzA0LzhhL21hc2hhYmxlZ2l2LmM5Ry5qcGcKcAl0aHVtYgkxMjAweDYyNyMKZQlqcGc/5f63f019/446/mashable-giveaway-build-your-own-twitter-promotion-with-promojam-invites--c87159b685.jpg>
<http://mashable.com/2010/11/08/promojam-invites/>