These type of approaches are how to begin to SWAT proof privacy services analogous to what was Lavabit provided, but some of other issues are:<p>- overlay node discovery, registration (which ethereum may handle)<p>- interop with common protocols DNS&#x2F;TLS&#x2F;SMTP&#x2F;IMAP&#x2F;IP&#x2F;&quot;entry|exit&quot; nodes<p>- assure high availability of persistent data<p>- end-to-end encryption<p>- incentivize people to run nodes to provide bandwidth, low latency, storage and computing resources... possibly to rate limit the API and pay&#x2F;barter nodes with multiple cryptocurrency&#x2F;ies ( LTC &#x2F; maaaybe something on top of ethereum in addition to BTC)... more than just for access, but analogous to running a solar array at home and being connected to the grid<p>- ease of building applications and extensions on top of other distributed services (make it dead simple, not over-engineered... ethereum appears to do this)