<http://schema.org/thumbnailUrl>
<http://i1.wp.com/www.gottabemobile.com/wp-content/uploads/nook-on-kindle-mashable.jpg?fit=150%2C150>
<http://www.gottabemobile.com/2011/11/15/amazon-fire-mistakenly-allows-third-party-app-installs-like-the-nook/>