Say you’re scrolling through your Facebook Newsfeed and you encounter an ad so eerily well-suited, it seems someone has possibly read your brain.
Maybe your mother’s birthday is coming up, and Facebook’s showing ads for her local florist. Or maybe you just made a joke aloud about wanting a Jeep, and Instagram’s promoting Chrysler dealerships.Whatever the subject, you’ve seen ads like this. You’ve wondered — maybe worried — how they found their way to you...
While you’re logged onto Facebook, for instance, the network can see virtually every other website you visit. Even when you’re logged off, Facebook knows much of your browsing: It’s alerted every time you load a page with a “Like” or “share” button, or an advertisement sourced from its Atlas network. Facebook also provides publishers with a piece of code, called Facebook Pixel, that they (and by extension, Facebook) can use to log their Facebook-using visitors. more
