Dropbox magic
>comparing file hashes. We don't look at the files in your private
So is this just NSA style legalese, they don't "look" at the files, they measure the magneto resistance of the bits on the disk.
Or do Dropbox have some non-contact way of calculating a filehash? Perhaps they calculate all possible file hashes and then use quantum mechanics to select the alternate universe in which they correct one is first?