Please dont use the word rebate and trader in the same sentence. These guys are the farthest things from real traders. I have known a few guys who went that route. Were failed "real" traders. They lasted a few months in that moronic game.
However, due to readiness issues at the New York Stock Exchange and the American Stock Exchange, the NASDAQ Market Center will continue to quote in penny increments in NYSE- and Amex-listed stocks trading below $1 until further notice. The NASDAQ Market Center will round any sub-penny orders/quotes received in these stocks. see link below: