<http://schema.org/description>
"Twitter started out life as an AIM hack that Jack Dorsey added to his pager, Wired reports.\r\n\r\nDorsey had been quite involved in the world of instant messaging, and had launched a dispatch ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/twitter/2011/05/18/the-inspiration-for-twitter-aols-aim/>