Back in the bubble days I used to daytrade YHOO, One day I was long 600 shares and I decided to exit at $170. By mistake I entered $17 . When I checked my daily activity it said 600 sold at $17. Words can't describe the feeling i had as I realized I just pissed away 90K on an order entry error. I was in such a panic i did not think to check my account balance. I called ETRADE, told them what happened, and the guy started laughing and said just calm down, Then he said you order was sold at 170.11 and in a matter of 5 minutes my emotions had went from rock bottom to sky high. This was over 4 years ago, and to this day I have never made another order entry mistake.
RS