answer:My mom uses Carbonite, which I believe just came in very handy after she got a virus and lost the contents of her hard drive. I have not used it personally, though, so I can’t speak for it. Myself, I have an external hard drive for this purpose. I’m considering getting a second or maybe something like Dropbox, where I can have a second backup in case the external drive fails. I have so many years and hundreds of thousands of photos, I would curl up and cry if I lost them all. I’d be devastated. I have used this successfully, though. I, myself, had a tenacious virus a few years ago and had to wipe my HD. Thank god I had that 150 gig external drive to save all my stuff!