<http://schema.org/description>
"Instagram has always had a close association with Twitter for me. It's rare that I post a shot into my Instagram stream without also cross-posting it to Twitter. Now I can do the opposite ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2011/05/31/tweet-directly-into-your-instagram-stream-with-tweegram/>