Facebook Facts

Facebook pays at least $500 if you can find a way to hack the site.

Over 350 million people worldwide meet research criteria for Facebook addiction, a behavioral pattern studied by psychologists but not yet recognized as an official mental health disorder.

Facebook is blue because Mark Zuckerberg is red-green color blind. Blue is the only color he can see clearly. "Blue is the richest color for me — I can see all of blue," he told The New Yorker in 2010. One man's biology dictated the look of a platform used by 3 billion people.

A computer programmer named Maneesh Sethi hired a woman to slap him across the face every time he uses Facebook during working hours.

A woman in Britain was sentenced to 20 months in jail for creating fake Facebook profiles and trolling herself.

You can't block Mark Zuckerberg on Facebook.

In 2011, more than a third of all US divorce filings contained the word 'Facebook'.

In 2009, Brian Acton applied to work at Facebook and was rejected. He also applied to Twitter and was turned down. He tweeted about both rejections. Then he co-founded WhatsApp with Jan Koum. In 2014, Facebook bought WhatsApp for approximately $19 billion — making Acton a billionaire and turning his rejection into one of the most expensive hiring mistakes in corporate history.

In 2005, graffiti artist David Choe was hired by Sean Parker to paint murals inside Facebook's first office in Palo Alto. He was offered $60,000 in cash. He took stock options instead. When Facebook went public in 2012, his shares were worth approximately $200 million.