Facebook Will Have One Billion Users By September(businessinsider.com)

http://www.businessinsider.com/chart-of-the-day-facebook-will-have-one-billion-users-by-september-2012-1?nr_email_referer=1&utm_source=Triggermail&utm_medium=email&utm_term=SAI+Chart+Of+The+Day&utm_campaign=SAI_COTD_011212