<http://schema.org/image>
<http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2013/02/6842111852_acaf895aea_b-520x245.jpeg>
<http://thenextweb.com/apple/2013/02/04/tweetbot-for-ios-updated-with-chrome-and-1password-link-support-inline-image-previews-for-flickr-and-vine/>