This is more of a rough poll, but how much money would it take to create a successful equity market making operation from scratch? $30mil, $50mil, etc? I'm talking salaries, equipment, etc. And do you need the fast connection from Chicago to NY, or can you stand-alone make markets and still make 5-figures or more a day? And finally, are the players at the top currently more or less going to be the same ones there 10 years later? Has the game become that tight?