Ever since we bought our MacBook a few years ago we have been carelessly using it without any back up system which obviously made me very worried.
So, enough of procrastination. I just got back from São Paulo's new Apple authorized dealer called A2YOU where I finally upgraded our MacBook to the Mac OS X Leopard which comes with Time Machine. Time Machine automatically keeps a copy of everything we have on our Mac... our digital photos, music and my wife's recipes. What's really cool is that it not only keeps a copy of every file, it remembers how our system looked on any specific day, which means we can revisit how our computer appeared in the past. I wish I had the same capabilities with the computer we use at the office.
I also bought the Western Digital My Passport for Mac, a portable hard drive that I found simple to use and easy to carry around on future business trips. A great combination for peace of mind. No more worries.