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When I got into bitcoin in 2011, it had a market cap of $20 million, and already had several killer apps:

- Making darknet drug markets possible

- Allowed permissionless, highly convenient storage of wealth

- Allowed large, rapid, low friction money transfers anywhere in the world

Now, in 2017, Ethereum has a market cap of 8 billion, yet I can't find a single use case for this technology other than enabling other scammy ponzi-like coin offerings.

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Transparent voting mechanisms, prediction markets, p2p betting, gaming micropayments, distributed computing rewards, replacing entire national currencies because of irresponsible governments,etc

Vague gambling stuff - is this really going to be a 10x improvement over betfair who already offers solid p2p gambling markets with <5% house take?

Distributed computing rewards - maybe for a subgroup off applications (eg. illegal stuff eg. piracy), but in general terms a centralised system is easier, cheaper and quicker to develop

Replacing national currencies - this is already bitcoin's killer app. Ethereum adds almost no utility to this space.

Besides, the right people already have the art market for this role.

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