"When you rolled out of bed this morning, did your thoughts turn to preserving your data in the case of hardware failure? If so, you either work with databases or you remembered that today, March 31, is World Backup Day. In fact, it's the first World Backup Day. The concept emerged from our sister site, reddit, where one intrepid redditor suggested the idea a week ago, and the reddit community quickly jumped onboard.

Imagine you're head of a company whose stock in trade is mining one of the world's most valuable resources. You've just struck a rich new cache. The potential for profit is huge. Then, all of a sudden, disaster strikes. Maybe your equipment failed. Maybe your technology had some unforeseen flaw. Maybe it was human error. Whatever the cause, in an instant that promising new profit center has become a liability, and what was once a valuable commodity has become a dangerous contaminant, gushing out of your control at an alarming rate.

Whether you're moving, short on cash, or running out of storage space, you've got plenty of reasons to ditch your physical media. Hard drives are cheap; here are our recommended methods of saving, selling, and trading your CDs, DVDs, and video games.