Thanks for the links, we didn't realize Coinbase was in the business of telling customers what they can and can't do with their own money.

This is really amazing, they're basically eliminating 90% of what makes bitcoin useful ... why would anyone use their service ?

When someone draw cash at a US bank, does the teller explain that they are not allowed to gamble with it and that he will close the account if he suspects the money will be used to gamble ?

Also, it'd be interesting to conduct an experiment to see if they still do this if a user first transfers the coins to a wallet on their own computer prior to placing the bet.