https://gigaom.com/2015/08/27/facebook-sees-over-1-billion-people-in-a-single-day/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+OmMalik+%28Gigaom+News+%26+Research%29

Facebook reached a new milestone earlier this week as the social network saw one-seventh of the world’s population (aka 1 billion people) logged into the service in a single day.