It's a bit less silly than the National Day of Unplugging, but unless your weekend starts on Thursday, there's nary a snowball's chance in Hades that you're going to skip tonight's network comedy lineup in order to do something that you can clearly put off until tomorrow. But what if, dear readers, your data doesn't make until tomorrow? What if those images from your first date vanish into the ether? What if you spend $4,598 next week in vain as a perplexed computer technician asks you if you'd ever considered backing your critical data up? For those that choose to act on World Backup Day, that future isn't one you'll have to c