<http://schema.org/description>
"Thanks to a helpful suggestion from a source at Facebook, I've discovered a wealth of unread private messages that I've never seen before on my profile. And yes, as a social media editor, ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/facebook/2011/11/15/you-might-have-hundreds-of-unread-private-messages-on-facebook/>