<http://schema.org/thumbnailUrl>
<http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2011/11/LinkedIn-520x245.jpg>
<http://thenextweb.com/socialmedia/2011/12/30/think-going-after-a-twitter-account-is-bad-this-company-wants-employee-linkedin-accounts/>