<http://schema.org/description>
"Twitter has expanded image previews for timelines on the Web and its Android and iOS apps. The new feature affects photos and Vine videos.\r\n\r\nHere's what it looks like:\r\n\r\n\r\nTwitter ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/twitter/2013/10/29/twitter-rolls-expanded-previews-photos-videos-vines-web-android-ios/>