I offer the argument to counter those that whine about unfairness. The traders pay the fees same as everyone else.
They are paying for the privilege.
How then is that unfair?
Im not the one arguing that HFT have an unfair advantage. Its some of the other posters on this thread. I agree with you that they are paying for the privilege so all power to them. But i am also arguing that HFT are creating Highly liquid markets that benefit retail traders