For gadget lovers, snapping up the latest, newest, coolest gadget every few months is a way of life. The moment you buy your mobile phone, media player, or digital camera, it's almost obsolete. It's just a matter of time when you'll decide to upgrade, to get the latest features and snazziest designs. What do you usually do with gadgets that you replace? Some gadget lovers exercise prudence and sell their old devices online, give them to friends, or hand them down to relatives or family members. I've often handed given my used mobile phones and laptops to my siblings. Or to help finance upgrades, I sometimes sell my used computers and peripherals online, often at big discounts. Yet some gadget lovers keep all their old devices after being replaced, only to collect dust in their  [...]