Sorry, but this is just wrong. Any system that offers multi user sync is inherently more complex than it needs to be as a backup solution. A backup should gener

Sorry, but this is just wrong. Any system that offers multi user sync is inherently more complex than it needs to be as a backup solution. A backup should generally be - convenient enough that you do it without thinking about it. - technically as simple as possible, so it's easy to understand and review. - secure. Dropbox fullfills the first point, but not the second, and the third is debatable. Spideroak as a counterexample is just as convenient, has a pure incremental backup mode and is client-side encrypted, the gold standard of security.