Been following this story which is quite interesting, but details are a bit sketchy in places.
http://www.investingcontrarian.com/inde ... f-a-robot/
Timber hill
It's quite an interesting story, made more so by it taking place on the Oslo exchange as opposed to one of the major exchanges. I hope the traders get off, if that robot is stupid enough to put up bids at higher prices, they have the right to take the other side of the trade.