This seems like more-or-less the standard feature set of other products. See, for example, products mentioned in the post: http://www.wuala.com/en/learn/feature

This seems like more-or-less the standard feature set of other products. See, for example, products mentioned in the post: http://www.wuala.com/en/learn/features http://www.wuala.com/en/learn/features https://spideroak.com/engineering_matters#storage_savings https://spideroak.com/engineering_matters#storage_savings http://jungledisk.com/personal/desktop/features/ http://jungledisk.com/personal/desktop/features/ tarsnap offers a unique mix of these features, but so does any other product.