Facebook has the advantage of being built into way more mobile devices than anything before it ever was. Many phones now come with a facebook icon on the main p

Facebook has the advantage of being built into way more mobile devices than anything before it ever was. Many phones now come with a facebook icon on the main page when you first turn it on. Also the amount of free advertising it gets from companies using it's logo everywhere with add us on facebook and have your say on facebook, how many other companies get their logo and a call to action to use there service for free on TV every day around the world?