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Average users aren't really the price setters though. That's more a function of what bigger traders do and bigger traders will pay attention to it. I still think a small spread is okay, and can be reduced/removed later if it isn't.

Yes, I fully agree that this option is going to attract big traders, probably even traders from the outside of the current Steem ecosystem.
It's sort of introducing 'futures market' or 'prediction market' for Steem. I wouldn't be surprised to see really big volumes converted back and forth.
So I feel like we could demand some contribution )