Using an intermediary to buy or sell from another intermediary an asset that was designed to not need intermediaries... without actually needing that asset at all, but actually settling legal contracts representing the asset.
Making gambling easier, that's what they're good at.
It's even worse with forex markets where broker A uses broker B, and broker B uses broker C to purchase contract rights from another broker.
In this case I would consider this bad news because buying fake Bitcoins is now made available to people outside the US as well. It was only a matter of time before this would happen, but that doesn't make it less bad. At least the CBOE has withdrawn itself from offering these casino type of products.