📑 Thanks to Facebook, Your Cellphone Company Is Watching You More Closely Than Ever | The Intercept

Annotated Thanks to Facebook, Your Cellphone Company Is Watching You More Closely Than Ever by Sam BiddleSam Biddle (The Intercept)
But these lookalike audiences aren’t just potential new customers — they can also be used to exclude unwanted customers in the future, creating a sort of ad targeting demographic blacklist.