<http://schema.org/thumbnailUrl>
<http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2012/12/gangnam-520x245.png>
<http://thenextweb.com/shareables/2012/12/21/psys-gangnam-style-becomes-the-first-youtube-video-to-reach-1-billion-views/?fromcat=all>