<http://schema.org/image>
<http://rack.3.mshcdn.com/media/ZgkyMDEyLzEyLzA1L2NmL2J1YmJsZWFsZXJ0LjJOLmdpZgpwCXRodW1iCTEyMDB4NjI3IwplCWpwZw/fa54e421/1db/bubble-alert-facebook-traffic-declines-10-in-april-1827342cb2.jpg>
<http://mashable.com/2008/05/20/facebook-traffic-decline/>