So you've got yer basic black box that has the nice little "sell if" algorithm in it so that when your puter sees that the stock goes up a penny it sells so many shares until the "if "condition is not longer met. Then you've got another "sell if" algorithm that begins to sell more if there is no activity for a given length of time. All of those who have "buy if" algorithms or orders placed never see activation unless there are so many bids percolating that they ultimately overwhelm the asks.....and you know what kind of fervour that takes......the kind of news we've been waiting for.