I can't stand the U.S. Postal Service with their obsolete stamps and long lines, but they have actually come up with a useful service called "Mail Back" that allows you to ditch your old gadgets in the mail for free. Currently, postage-paid envelopes can be picked up in around 1500 post offices in 10 cites that include Chicago, Los Angeles, and Washington, D.C., with plans to go nationwide if the trial is successful. Once mailed, the discarded electronics end up at Clover Technologies Group for recycling (or possibly in pockets of crooked postal workers). [ComputerWorld via Lifehacker]