Once upon a time, I bought a copy of Winzip. This is before the days that zipping was built into the Windows OS. Occasionally, I get promotional email from them and I'm too lazy to unsubscribe. Well, I'm glad I haven't, because I got an email from them about a new service.
The company is called Carbonite, and they perform online backups of your system. They offer $49 a year for unlimited backup space.
