I have been looking (for years) for a "good" online storage/sync solution that allows me to store my documents using my own private key. TrueCrypt etc don't reach the "set it, and forget it" level.

But when you think about how much more expensive storing those documents will be for these companies (as each copy of the same document will be encrypted with a separate private key), and how much value these companies will miss out on because they won't be able to scan our documents, it's understandable why I may never find such a solution.