I signed up with a DAT broker. Their smart routing system lets me enable only a certain ECN's & preferencing methods. Initially I decided to enable only ISLD, INCA and SOES; partly because ISLD and INCA give rebates to orders adding liquidity. I noticed that Track ECN also gives $.002/share rebate, but I saw ET poll on ECN's which gives poor marks to Track ECN. Should I enable Track also, just in case the smart routing send it there, and I get a rebate? Or is Track so bad, that I should stay out of it? I'm new to DAT.