<http://schema.org/description>
"As of February 20th, 2013, you're going to have two fewer characters to send a message on Twitter when you're sharing a link. The t.co wrapper that Twitter is using to shorten web addresses ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/twitter/2012/12/06/twitter-take-away-two-of-my-precious-tweet-characters/>