Anybody heard of this? Its for only fully electronic contracts. Sounds like as momentum and volume increase noise get louder. Buy em and Sold are heard when bids or offers get hit. Bid and Offer are constantly being shouted out. Just wanted to know if anybody has heard of this or is currently using it. Anybody know where I can get more info on it because I know there is probably more than one provider of such a thing. It sounds very interesting and im anxious to know more.