<http://schema.org/description>
"Not only does Facebook want to know as much about you as Google does -- the social network also wants to pitch products directly in your News Feed. In a recent blog post, Facebook said it was"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.aol.com/article/2013/03/29/facebooks-war-with-google-goes-nuclear/20523516/?gen=1>