<http://schema.org/image>
<http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2013/09/tin-cans-520x245.jpg>
<http://thenextweb.com/apps/2013/09/14/6-cross-platform-messaging-services-that-work-from-desktop-to-mobile/facebookmessenger-2/>