<http://schema.org/description>
"There are lots of tweets floating around today with the hashtag #TwitterEditButton, from people who think Twitter should implement the option to edit tweets after they've been published.\r\n\r\nThere's ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/socialmedia/2010/08/29/does-twitter-need-an-edit-tweet-button/>