Just a friendly reminder; there is no account minimum-- you can load your wallet with $0.25 worth of bitcoins and start trading. The margins to initiate 1 contract is 0.25 μBTC (25 satoshi). Fees are 0.01 μBTC (1 satoshi) per market order. Limit order fees are waived (re-credited at settlement). The goal is to provide a open and highly liquid digital asset trading market free from information asymmetries. Never load all the bitcoins you own to the exchange wallet.
Fee rebate is available for any interested market-maker.
Please feel free to ask questions or address any concerns.