[gibsons77]

I agree that this particular example may not seem useful (since there are other, centralized ways to trade AAPL derivatives), but the useful thing here is that it's all within the same ecosystem. I've traded for years using brokerages, clearing houses, and banks, and this removes all of that overhead. The pegs are maintained by arbitrage and this allows the removal of almost all of the overhead associated with futures markets. But that's really just the tip of the iceberg. I'm not here to convince anyone; you should convince yourselves that it's either useful or not. There's certainly a lot of real development going on if you know where to look, and the hype is warranted if you can see the whole picture.

[skybrian]

If it were a system that handled all the taxes for you, that would be genuinely useful. Keeping track of it all yourself seems like it would be a drag?