re: Dropbox File Brouhaha: Use Case Is The Issue
Dropbox checks docs because of the so called deduplication process. It means if you upload anything to their servers, they check it, whether it is up already. If it is, they provide a shortcut to the already uploaded file and delete yours. (eg. this works very well wit videos and music files). it is a common market practice among public cloud providers like Dropbox, Google Drive and so on, even many of those do it, who claimed to be secure (like Wuala). As far as I know dedup. is unavailable by client side encrypted tools, so you can skip all this trouble by using eg. Tresorit. Boxryptor is good to encrypt your dropbox, truecrypt is not really for could it's service focuses on local encryption.