rdiff is free, open source and gives control to the user. dropbox is large, binary-only, obfuscated code, built on FOSS (uses same library as rdiff), makes som

rdiff is free, open source and gives control to the user. dropbox is large, binary-only, obfuscated code, built on FOSS (uses same library as rdiff), makes some people very wealthy and gives third party control over user's files. i have never used dropbox. no need.