Bitcoin seems to me to be the least scummy of all these new distributed ledger ideas. What kind of use cases for a blockchain do you see as better/more useful/less scummy than currencies?

Bitcoin is the least scammy of all cryptocurrencies. Clear design, clear values, clear future (in terms of money minted), clear rules. Where is the scam??

There's nothing inherently scummy about money itself. It's just a tool for human organization.

There's nothing inherently scummy about a market, either. But black markets can get pretty scummy. What's the difference? The Clientele?