Love it or hate it, there’s no getting away from Facebook. The social media behemoth’s influence can be seen in every corner of the Web, from the site’s growing underground popularity in China (where the site is banned) to the fact that approximately 30% of american adults get their news from facebook.

As you’d expect from the world’s most popular social media site, Facebook has a fascinating story – and more than a few trivia tidbits that might surprise you. Here are 10 amazing facts about Facebookthat will prove just how remarkable the site really is, and may offer a glimpse of what we can expect from Zuckerberg and his team in Menlo Park in the future.

1. Al Pacino was the first “face” on Facebook. A very early iteration of the site displayed a header image featuring a man’s face obscured behind binary code. The identity of the man could not be seen clearly, but it later came to light that the face was that of acclaimed actor Al Pacino.

2. Peter Thiel, co-founder of PayPal, was the first major investor to back Facebook. Thiel, a luminary in the startup and venture capital worlds, saw the site’s potential and invested $500,000 into the young company in 2004. Thiel later sold his stake in the company for more than $1 billion.

3. Sean Parker, co-founder of now-defunct music sharing site Napster, originally acquired the Facebook support for sign Indomain name for $200,000. Parker was the driving force in the renaming of the site, and was highly influential as the site exploded in popularity.

4. A peer-to-peer file-sharing system called Wirehog was once a core function of Facebook. Mark Zuckerberg introduced the P2P file-sharing system when LogIn or Signup reached approximately 500,000 users, and once believed it would become a central component of the site. Wirehog was retired over fears of potential legal repercussions of copyright infringement in 2006.

5. Mark Zuckerberg suffers from red-green colorblindness. This is why Facebook’s primary color scheme is blue – although it certainly doesn’t hurt that blue is also strongly associated with trust and security, two concepts essential in getting people to voluntarily part with their personal information

6. Facebook’s ‘Like’ button used to be the ‘Awesome’ button. Facebook engineer Andrew Bosworth said that he and other engineers were enthusiastic about the “Awesome” button, but that the idea was ultimately vetoed by Zuckerberg in 2007. The site eventually settled on the “Like” button, a decision that Bosworth said was met with a decidedly lukewarm reception.

7. Facebook stores approximately 300 PETABYTES of user data on its servers.There are 1 million gigabytes in a petabyte. The entire written works of humankind, in every known language (including Latin and other historical languages) from the dawn of recorded history, would occupy approximately 50 petabytes. Think about that for a minute.

8. In 2014, the alleged global economic impact of Facebook was approximately $227 billion. However, this statistic (and the methodology behind it) has been called in question by several economist. Whether you buy facebooks data or not, there’s no doubt that Facebook has had a serious impact on economies around the world.

9. Facebook’s user base grows by eight people per second, or 7,246 people every 15 minutes.Some naysayers have foretold of Facebook’s impending demise, but aside from boasting the largest user base of any social network in the world by a gigantic margin, this statistic proves Facebook is still growing.

10. In 2015, Facebook boasted 22% of WORLDWIDE mobile Internet advertising revenue. That means almost one-quarter of all advertising revenue generated from mobile Internet ads in a single year went to Facebook.