I wanted to recommend to sifters online backup services, like Mozy and Carbonite. They backup your files as soon as you make changes.

Mozy offers 2 gig of backup free. If you want unlimited storage space, Carbonite costs $55/year and Mozy costs a little more, but Mozy lets you pay on a monthly basis.

There's probably software for external harddrives that does the same thing, which probably protects your data from most risks, but there are still the risks of theft, freak electric events, natural disasters, and extraterrestrial invasions.


My main computer is a little damaged right now (http://geek.videosift.com/talk/Uninterruptible-power-supply-Advice), so I'm glad I recently started a backup subscription.