Zero. http://www.slate.com/articles/business/moneybox/2012/02/facebook_s_ipo_how_mark_zuckerberg_plans_to_retain_dictatorial_control_his_company_.html http://ww

Zero. http://www.slate.com/articles/business/moneybox/2012/02/facebook_s_ipo_how_mark_zuckerberg_plans_to_retain_dictatorial_control_his_company_.html http://www.slate.com/articles/business/moneybox/2012/02/face...