<http://schema.org/thumbnailUrl>
<https://www.clickz.com/wp-content/uploads/sites/2/cnt-import/clickz-db/IMG/655/205655/push-notification-digital-wallets-story-320x198-120x90.jpg>
<https://www.clickz.com/how-amex-foursquare-and-others-advanced-the-digital-wallet-in-2011/48564/>