If you want to dump off your old cellphone, camera or MP3 player but don't want to deal with the hassle of not getting robbed off Craigslist, check out Second Rotation. These guys have a gigantic "bluebook"-like list of what gadgets are worth and will pay you cash money within ten days of receiving the item (provided it's not in horrible condition). Sure, it's going to be less than what you'd get from selling it to some rando on eBay, but dealing with a company rather than some stranger seems safer and more convenient to us. [Second Rotation via Coolest Gadgets via Gadget Lab]