Um, there's also the client side of this.

You can lock up your data all you want, but with the NSA deeply embedded in telecoms and mobile device manufacturers, once you try to access said data in a manner consistent with the project's marketing, e.g. on an apple-engineered device running Verizon's comm middleware, the NSA gets your data anyway.

This is the same problem projects like Moxie's silent circle have. It's trivial for the authorities to grab data between the device's interface and the software - they don't need to decrypt a damn thing.