See the List by Google Ad Planner http://www.google.com/adplanner/static/top1000/ I am sure Google has more Unique Visitors (users) than facebook but may be not that many Page Views.
iTS SURE THAT AFTER SOME YEARS GO4EF WILL BE IN TH@T LIST <----MAY GOD BLESS THIS FORM-------> :rockon:--------------------------------------------------------:crowd:-