"Facebook's News Feed-the main list of status updates, messages, and photos you see when you open Facebook on your computer or phone-is not a perfect mirror of the world.
But few users expect that Facebook would change their News Feed in order to manipulate their emotional state."
With the explosion of digital technologies, companies are sweeping up vast quantities of data about consumers' activities, both online and off. Feeding this trend are new smart, connected products-from fitness trackers to home systems-that gather and transmit detailed information.
Uber, realizing it had hundreds of millions of people in its back seats as a captive audience, just announced it will allow third-party apps the ability to serve up notifications, content, or ads to its users during their trips. The notifications would be customized to the length and locations of each person's ride, but only with permission from the user.