I hear google is starting a new service where you get your electricity for free, but they get to keep all the usage data and do whatever they want with it. As a first test of the utility of this they are modeling when people are home and when they are not, then door-to-door sales organizations get to participate in an auction to buy time segments of people at home. Rumor has it that the Girl Scouts and the Jehovah's Witnesses were having a bidding war for your house at 6:45-7:15 PM next tuesday. Next they will target your computer with ads for porn when you are using the laptop after 11PM and the wife has set her alarm earlier than 7AM and turned off the upstairs lights. Other applications to follow.
Ok, ok, i just made that up.