Did you know that Facebook keeps a secret file on you that includes previous images, advertisements you’ve clicked on, conversations, documents shared on Messenger, and much more?

Facebook isn't the only website that does this type of data aggregation. Google does it too and it's by selling this information that both services remain free, so it's kind of a catch-22.

This isn't a secret either, Facebook notes these actions in their Data Policy:

“We work with third-party companies who help us provide and improve our Services or who use advertising or related products, which makes it possible to operate our companies and provide free services to people around the world."

IFLScience.com recently shared how to find out just exactly what info Facebook keeps about you, and here's how you can find out:

Step One (for desktop/laptops) 

On your Facebook account, click the upside-down triangle in the far right top corner of the page.

Step Two: 

Click 'settings' at the bottom of the drop down menu.

Step Three: 

Click 'Download a copy of your Facebook data,' and then click the green button that says "Download Archive"

You will then be sent an email - in about an hour or so - that tells you when your data is ready to download and voila! Your Facebook info is right there.

Some people may agree with their data collection policy and some may not, but one thing is for sure if you want Facebook to be free you're going to lose some of your privacy.

BONUS VIDEO