Have you ever felt like you were living in an Orwellian nightmare? You remember speaking to your best friend about getting that bag you saw on Amazon, and the next time you're on Facebook, an ad for the bag pops up mysteriously on the site. What about that time you texted your mother about plants she could get for her garden? The next day, Facebook showed you an ad for an online nursery. Creepy, isn't it, how the social network seems to be following your every move?