<http://schema.org/thumbnailUrl>
<http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2013/03/2013-03-12_11h24_34-520x245.jpg>
<http://thenextweb.com/apps/2013/03/12/dropbox-refreshes-its-desktop-client-for-improved-file-sharing-real-time-notifications/2013/>