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 Facebook that 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 Videos are the most-shared content type on Facebook.

On average, videos receive 89.5 shares per video, significantly higher share counts than photos or text-based posts.

2 Facebook Earning

Posting just once or twice per day on Facebook yields an average of 40% more engagement than posting three or more times per day. This shows that, despite marketers’ best efforts to beat Facebook’s rapidly declining organic reach, you can’t just use brute force to make yourself heard.

3 Every minute of downtime outage costs Facebook approximately $24,420.

The “prolonged” outage that lasted for 19 minutes in August 2014 cost the company almost $427,000 – and you thought you were pissed when Facebook goes down.

4 Facebook earns an average of $5.85 for every Facebook user in the United States and Canada.

These two countries also have among the highest monthly active users of any country in the world, making North America a vitally important market for Facebook

5 Posts published between 10 p.m. and 11 p.m. EST receive approximately 88% more interactions on average than posts published at other times of the day.

Also, ending posts with a question lifts interactions with those posts by an average of 162%.

6 Facebook ads targeting custom audiences have 14% lower cost-per-click and 64% lower cost-per-conversions than ads utilizing interest- or category-based targeting, on average.

In addition, Facebook ads using custom audience targeting had conversion rates 387% higher than ads only using demographic targeting.

7 Adult Facebook users in the United States spend 68% of their mobile device time using apps.

Despite this, there were only approximately 8,400 app advertisers on Facebook in 2013 – and these 8,400 advertisers drove more than 145 million app installs in that year alone.

8 There are now more than 2 million active advertisers on Facebook

The popularity, impact, and cost-effectiveness of Facebook ads has made the site one of the most popular online advertising platforms in the world, and its upward trajectory seems likely to continue.

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 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.

If you know any fun facts about Facebook, let us know in the comments!