<http://schema.org/description>
"Twitter just rolled out a number of new features on Twitter.com. Many users have noticed the changes which seem to have hit within the last few minutes.\r\n\r\nIn a tweet just now, Sean ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/socialmedia/2010/08/13/twitter-rolling-out-new-features-including-the-ability-to-block-retweets-from-people-you-follow/>