<http://schema.org/description>
"You've probably seen the apps used by The Washington Post and Yahoo! on Facebook that require you to install something before you can read an article shared by one of your friends from ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2012/04/08/heres-how-to-skip-that-annoying-social-reader-feature-on-facebook-if-youre-using-chrome/>