<http://schema.org/description>
"In case you missed it, a new version of Twitter is coming. In fact, a new version of Twitter is already here, if you're on mobile, and you may even have unlocked the Web version already. ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/twitter/2011/12/09/how-twitter-is-unifying-to-reach-7-billion-people/>