<http://schema.org/thumbnailUrl>
<http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2010/12/Screen-shot-2010-12-22-at-10.38.51-PM.png>
<http://thenextweb.com/socialmedia/2010/12/23/the-perfect-social-network-it-doesnt-exist-yet/>