Facebook

Facebook's logo is seen through a magnifier in front of a displayed PC motherboard, in this illustration taken April 11, 2016. REUTERS/Dado Ruvic/Illustration - RTX29IF2

5 Facebook secrets you should know

In the second quarter of 2016, Facebook had more than 1.7 billion active monthly users. And it’s a safe bet that many of them don’t know these five secrets.