In Pictures: Hot or not, 10 tech trends for 2013

Breakouts and busts: Here's the lowdown on this year's sizzlers and fizzlers in tech

HOT: Fly-by spies

Surveillance has never been so cheap or so easy. For just $300, you can buy a small remote-controlled copter with a video camera and launch your own spy network. Drones have been deployed by police departments from Seattle to Miami as roving CCTV cameras; they've also been used to track endangered rhinos in the wild and by Occupy Wall Street protestors to provide bird's-eye coverage of street actions. Their use has become so widespread that state and federal officials are mulling legislation to regulate unmanned aerial vehicles. Until then, though, the sky's the limit.

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