if Apples figures are correct, less than four percent of Mac users perform regular, automated backups. The company hopes to change that with Time Machine, the built-in backup feature that will debut in Mac OS X 10.5.
So how well did Apple's Time Machine help? Do you do automated backups now?
I know that 3 years ago I didn't do automatic backups, but now I do.
(Source)http://www.macworld.com/article/52283/2006/08/leotimemac.html