<http://schema.org/thumbnailUrl>
<https://www.androidcentral.com/sites/androidcentral.com/files/styles/thumbnail/public/article_images/2015/11/pingpad-hero.jpg?itok=jTtw8soz>
<http://www.androidcentral.com/pingpad-might-just-be-ultimate-mash-google-docs-slack-and-evernote>