is an remote backup service for Windows whose main differentiating factor is that it's free. Sort of. I'll get to that in a moment. Like most online backup systems, you install some software and then schedule it to send your precious files to a server somewhere else every week, night, whatever. Mozy emphasizes security, transmitting your files over 128-bit encrypted SSL and then storing them with 448-bit Blowfish encryption on Mozy's server. For free you get 2GB of storage space, which is plenty for many people's most important documents. If you drop $4.95 per month, you get bumped up to 30GB. So, what's the catch? Mozy sends you a newsletter each month filled with ads. Mozy says they "only work with advertising sponsors we think offer worthwhile, useful products and services" and your email address is never shared. This business model seems to rely on the fact that most people can't figure out how to filter its newsletters into the trash, but hey, if it's working for them, more power to them.