Another wish to add to that: independence from any one cloud provider. So if amazon has a power failure, or Dropbox gets asked to turn off your account, or Mega

Another wish to add to that: independence from any one cloud provider. So if amazon has a power failure, or Dropbox gets asked to turn off your account, or MegaCloud gets raided by your favorite 3-letter acronym, all your files are still there. And you did not need to upload your data 3 times (in other words, there is a protocol where cloud providers sync their data for you). Not sure if this is technically feasible, though - for example, what happens if an interceptor gets hold of service 1 and tells the other services to delete everything as part of the synching process? Article also mentions the wish to tell cloud providers to search through data for you (without you needing to download everything) while withholding the decryption key from them (that's how I read it, anyway). I'm not sure this is possible either.