Facebook had 50 million users at October 2007 [1], that is $300 per user. https://finance.yahoo.com/news/number-active-users-facebook-over-years-214600186--fin

Facebook had 50 million users at October 2007 [1], that is $300 per user. https://finance.yahoo.com/news/number-active-users-facebook-over-years-214600186--finance.html https://finance.yahoo.com/news/number-active-users-facebook-...