Bitcoin mania with its wild price swings has taken over the attention of a good part of the financial world, and now it has become a commodity. Following approval of the CFTC trading of bitcoin futures, which began last Sunday night at the Cboe, the CME will launch its competing bitcoin futures contract the night of 17 December. For some old-time commodity futures traders, this is like an early Christmas present. Traders accustomed to seeing corn futures prices trade in a 2-4 cent daily range may drool at the potential opportunities to buy and sell highly-leveraged contracts that can move thousands of dollars per unit in a single trade. Moreover, with bitcoin futures barely born, there are not yet algorithms or computer trading programs to...