<http://schema.org/description>
"It seems that Twitter has disabled the retweet function for most of its users. No idea if it has anything to do with the end of the year (lets not relive it?) or it might just be another ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/2009/12/31/twitter-retweet-2009/>