15 Surprising Things You Didn’t Know About Facebook

*poke*

1. Al Pacino was the first face on Facebook.

For some reason, I assumed the face that lived on the Facebook header until 2007 was a poorly-executed portrait of Mark Zuckerberg? I’m dumb. It’s actually a young Al Pacino, for reasons unclear. The logo was created by Zuckerberg’s friend and classmate Andrew McCollum.

2. 600,000 hacking attempts are made to Facebook accounts every day.

What do hackers attempt to do once they’re in? Most commonly, they spam the member’s friends in an attempt to sell counterfeit goods. (Another popular activity: updating your friend’s status to say “I’M A HUGE POOPHEAD.”)

3. 64% of Facebook users visit the site on a daily basis.

According to a 2014 Pew study. That’s up from 51% in 2010.

4. Facebook is named as a factor in one of three divorces.

The social network was implicated in a third of all divorce filings last year, according to Divorce-Online, a survey by a British legal service. The reason? Social networking is making it way easier to track down former flames and communicate with potential new flings.

5. More than 1 billion people access Facebook on a mobile device on a monthly basis. That’s about 1/7 of the people on planet Earth.

Also, Facebook has more monthly users (1.28 billion) than India has people (1.24 billion).

6. People have been murdered for unfriending someone on Facebook.

In 2012, a Tennessee man fatally shot a couple who had unfriended his 30-year-old daughter on the social network.

7. Facebook tracks which sites you visit, even after you’ve signed out.

In 2014, Facebook told Ad Age that it will start tracking users across the Internet using its widgets such as the Like button, but that’s only one step in the company’s long history of privacy quicksand.

8. For a fee, you can message people and have it go directly to their inbox, skipping that pesky “Other” folder that no one ever checks.

9. One in three Facebook users reported that they felt worse after visiting the site.

Especially if they viewed vacation photos.

10. Facebook is blue because Mark Zuckerberg suffers from red-green colorblindness.

Zuck told New Yorker reporter Jose Antonio Vargas in 2010 that “blue is the richest color for me — I can see all of blue.”

11. Someday there will be more dead people on Facebook than living ones.

It’ll probably happen in either the 2060s or the 2130s.

12. Adding /4 to the end of Facebook’s URL will automatically direct you to Mark Zuckerberg’s wall.

There’s more! Adding 5 or 6 to the end of the URL will take you to the respective profiles of Chris Hughes and Dustin Moskovitz, who are Facebook co-founders and Mark’s former college roommates. Adding 7 to the web address takes you to the profile of Arie Hasit, another good friend of Zuckerberg from his days at Harvard.

13. 83 percent of prostitutes have Facebook pages.

(According to a 2011 study at Columbia University.)

14. The average adult Facebook user has 338 friends.

According to a 2014 Pew study.

15. The meaning of a “poke” has never been defined.

Is it a simple “hi”? Flirting? What’s the point? Facebook has never officially answered that question. In The Facebook Effect, author David Kirkpatrick reveals that Zuckerberg once played very coy during an interview: “We thought it would be fun to make a feature that has no specific purpose… So mess around with it, because you’re not getting an explanation from us.”

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