Someone should make an S3 interface that does automatic file versioning. Basically a CVS for non-coders. It seems like that would be an intuitive feature for any online storage product.

Do any of the current online storage products do this already? I know some of the new ones use S3 (elephant drive and jungle disk, to name two), but I don't think either of them have a versioning feature built-in. It shouldn't be too hard to create...