Some related questions - How much of your bitcoin hoard do you store in any one particular wallet solution? Is it better to split it up between hardware, software, online and paper wallets? How much is too much to store with any single solution?
In hindsight do you think pooled mining and/or the Stratum protocol has contributed at all to the centralization of mining? Do you see some centralization of mining infrastructure as an unavoidable necessity?
What are your thoughts on hardware projects like 21.co's Bitcoin Computer? Do you think connected hardware like this will drive adoption at all? Would you invest these types of integrated hardware projects?