WSJ had an article today saying that the id will no longer published. It becomes effective on April 30th on the CME. Apparently an owner of a brokerage firm felt there was not enough action to eliminate this advantage, so he told the exchanges that he was going to exploit the advantage. Now they're doing something about it. Does anyone know if there is an online presentation detailing how the CME electronic system works? The flow from once the buy order is executed on a client computer, then sent to the brokerage, and then how CME handles the order.