Facebook knows a lot about you. Really. And that's because they keep tabs on you, your interests, and more, so that advertisers can easily target people with those specific interests. If you've ever wondered why you see some ads, just check this page out.

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You can actually get rid of these by hovering over these things and deleting them. But the bad news is that there are hundreds of them. And even after you delete them all, Facebook will continue to add in more new things.