The "My Book" back-up hard drive with the software that automatically backs up my hard drive every day, just saved my ass! I thought I was working on a copy of the HTML version of one of my web pages. Turns out it was an original, which I found out after butchering the HTML so badly that it completely screwed up the webpage. I panicked for about 3 minutes and then remembered the auto back up. Dug around the back up files from yesterday and found the document all safe and sound.
No one should be without a back up hard drive that automatically backs itself up!