<http://schema.org/description>
"Whether it\u2019s that loosely connected \u201Cfriend\u201D who\u2019s faded off into obscurity, or brands looking to make the biggest impact, Facebook\u2019s EdgeRank holds all power of visibility. ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/socialmedia/2011/05/09/everything-you-need-to-know-about-facebooks-edgerank/>