<http://schema.org/description>
"The fact that Facebook has more than 1 billion users is pretty insane, but things just got a whole lot crazier thanks to The Faces of Facebook, a project that visualizes over 1.2 billion ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/facebook/2013/09/28/the-faces-of-facebook-puts-1-2-billion-peoples-profile-photos-on-a-single-page/>