I would NOT recommend Mozy. Ever.
I had a complete hard drive failure last fall, and foolishly thought that since I had my back-up with Mozy, it would be all easy-peasy to get my information back.
I was SO wrong.
Their tech help is useless.
Their web site is frustrating.
The retrieval of my files was corrupted.
It was a huge, headache-producing exercise in anger management for me.
I now have my back-up with Crash Plan, on-site. I back up my photos to Flickr. I SHOULD have another back-up somewhere else, in case a tree falls on my office. But, Mozy. No. Even if it weren't ridiculously expensive now.