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"Some companies will pay you money for that old cellphone or iPod."

It's said that information is power but could information mean less power, when it comes to electricity use? Environmentalists and makers of so-called smart meters are convinced that's the case. They say if consumers could see in real time how much power they're using, they'd conserve more. But some behavioral economists say no way. They say electricity is so cheap that real-time information might lead people to run their lights and gadgets even more.