A couple of months ago IB offered a commission discount to volume traders who would use two of their trading algorithms.Quote from falcon:
Can anyone tell me how I can get a better rate?
They also offer an unbundled commission rate that may save you some coin, depending on the size and nature of your trading:
http://individuals.interactivebrokers.com/en/general/notifications/01-29-04.php?ib_entity=llc

