It's a page for people with an account at FB that lists the 3rd party websites that have given information to FB. > Off-Facebook activity includes information

It's a page for people with an account at FB that lists the 3rd party websites that have given information to FB. > Off-Facebook activity includes information that businesses and organisations share with us about your interactions with them, such as visiting their apps or websites. It's creepy. > We receive more details and activity than what appears here. For technical and accuracy reasons, this list doesn't show all of the activity that we've received. Activity that is not shown includes information that we've received when you're not logged in to Facebook, or when we can't confirm that you've previously used Facebook on that device. It also includes details such as the item that you added to your shopping basket.