http://b4.crashplan.com/consumer/index.html
Truly dependable backup means backing up to multiple locations – not just online – which until now could be complicated. CrashPlan automatically backs up to multiple destinations for FREE!
CrashPlan’s groundbreaking social backup concept makes it easy to back up to computers belonging to your network of friends or family for offsite backup, in addition to using your own computers and external drives for onsite backup. CrashPlan works on all your computers, so you don’t have to worry about compatibility either.
CrashPlan is true backup; uncomplicated, reliable and even a little fun.