At first glance this seemed really creepy and invasive, but it seems like they're just measuring 'engagement' and predicting user preference for ads. If that le

At first glance this seemed really creepy and invasive, but it seems like they're just measuring 'engagement' and predicting user preference for ads. If that leads to more interesting ads, I'm not entirely opposed. On the other hand, it's treading awfully close to Huxley/Bradbury territory.