always baffled, page-13

What is the complaint though brenden? Aren't they just providing liquidity and making a bit of profit on the bid offer spread? In return for that profit they take a bit of risk on getting run over by either a big buyer or big seller.
Given they seem to end the day flat I can't see how their influencing anything? I would see them as a slight positive as they do show good size bids that you know you can hit if you need the liquidity. I don't focus on these trading technicals much, am I missing something obvious?