Apropos acceptable sharing of private data, I too felt the bile rise in response to this product announcement .. the idea that there are generations of consumers who are perfectly willing to have days and days of video of their personal spaces available with little oversight to a third party, well .. its just too much to bear.
I think that the reason its happening, though, is because of a failure of OS producers to solve a couple of problems: one big one is that people just don't like having to maintain a filesystem - and more often than not, don't understand how to do it, either. Another problem is that the OS vendors are asleep at the wheel and have let parties such as Dropbox and so on basically eat their lunch on area's that should really, arguably, have been features of the personal computer operating system world. Peer to peer should be a built-in feature by now. Distributed filesystems which allow full control by the end user: likewise. These should be up-front services of the OS, and not some back-end monstrosity which execution as a market force is leading, directly it seems, to people who just don't care where their data are stored, as long as they can see it now and then themselves ..
I hope we will see some response to this soon - certainly actors like the IPFS group (http://ipfs.io/) have some interesting approaches to the problem. I'd love to see the expectation of built-in, de-centralized, peer-based-filesharing to take off, and we can put and end to all these inter-connected violations of human rights otherwise dressed up as fancy Web 2.0 operations of value ..