Quote from Grandluxe:
Another blow to retail investor confidence. Liquidity will further disappear from the markets after this episode.
Quote from Bob111:
liquidity will disappear in a blink, if god forbid something serious happens(like 911 type of thing). last flash crash will be a walk in the park. it is the proof that they(DC,SEC,exchanges) didn't' learn anything from previous crash nor accomplished anything to prevent them in the future.