<http://schema.org/thumbnailUrl>
<http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2012/12/145812108-520x245.jpg>
<http://thenextweb.com/google/2012/12/13/google-maps-becomes-the-app-stores-most-popular-free-app-just-7-hours-after-launch/?awesm=tnw.to_l0YTU>