I've known about MarketX's policy to provide money to those that put a limit order in their book (that is later executed). Apparently they pay up to $10/transaction. If your limit order is for 1000 shares and the other side is a large institution or brokerage then you get paid 1c/share. Theoretically this should have vaulted MarketX to a higher ranking on the ECN list. I don't think it has made much of a difference. Is this rebate limited to those trades entered through Tradescape/Momentum Securities (the owners of MarketX) or can any broker (IB or MB) get in on the deal? If you have experience with this, your comments would be appreciated. Thanks.