Precisely, the MM's use the level II to create traps, for example, one stock trade at 1, and begin a run, almost immediately the MM's move to 1.50 for example, to give the idea that the street is free till 1.50, the people start to buy confident that the stock will hit 1.50, the price is now at 1.15, you just bought, suddenly one MM that was at 1.50 begin to sell at 1.15, 1 minute later comes another and so on, in 3 minutes you have 10 MM's selling at 1.15 or lower and the price drop to 1.10, this is how they act, back to 2001 I used level II for 3 months, I saw this happen hundreds of times, I will never ever use again level II.