<http://schema.org/thumbnailUrl>
<http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2013/07/facebook-520x245.jpg>
<http://thenextweb.com/facebook/2013/08/29/facebook-lawsuit-settlement-prompts-it-to-clarify-how-user-content-is-used-in-ads/>