<http://schema.org/description>
"Facebook is doubling down on its own messaging app after revealing plans to remove the messaging feature from its regular mobile apps, and force users to download Messenger if they ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/facebook/2014/04/10/facebooks-two-pronged-mobile-messaging-app-strategy/>