<http://schema.org/thumbnailUrl>
<http://www.imore.com/sites/imore.com/files/styles/thumbnail/public/field/image/2013/04/foursquare_hero.jpg?itok=5HmHGOXs>
<http://www.imore.com/foursquare-60-gets-more-interesting-and-brings-better-search>