While the exact numbers are obviously not available - something like 500 million was spent on FB ads in 2009 and in 2010 that number is likely a billion. I don

While the exact numbers are obviously not available - something like 500 million was spent on FB ads in 2009 and in 2010 that number is likely a billion. I don't take David's flawed 'they wouldn't raise money if they were making good revenue' as a valid statement. The revenue they make is all profit - there is no middle man or hidden expenses. They have operating costs which are sizeable, but it as they grow and mature their business and revenue - their profit will grow.