Zuckerberg opened the conference by confirming that 1.55 billion people now use Facebook every month, and stated some other amazing stats for the site:
1.More than 1 billion people use Facebook every single day
2.1.39 billion people now use Facebook on mobile devices, including more than 1 billion on Android
3.There are 8 billion daily video views on Facebook
4.More than 500 million people watch videos on the site daily
5.In September 2015, over 1.5M small businesses posted video to Facebook, including native uploads and video ads.