Can you give us some specifics about what problems you encountered, and how IB responded when you complained about them? Or did you just create your brand new EliteTrader alias, and devote your very first posting to vague and unsupported attacks on IB, because you are shilling for one of IB's competitors?
TSX Venture MARKET orders cannot drop price by more than .01 after which it posts as NBO limit. Not sure if it's only for the penny stocks on the Venture. I guess they don't want you to crash the market on a thin book. TSX rule.