This is a cool service--I'm using it now to back up my 8GB music collection. Runs in the background on my Mac. The cooler thing is that it uses S3, which is

This is a cool service--I'm using it now to back up my 8GB music collection. Runs in the background on my Mac. The cooler thing is that it uses S3, which is something I've been looking at for my own startup. $0.15/gb/month for storage.