I (Scottrade) can't put in stop loss orders on penny stocks. Most brokers recognize that MM's are crooks and won't let you because the MM will lower the PPS, take out your order, then move it back up again. This happened to me on the AMEX and brokers allow it there. I came home from work, looked at the chart and saw a straight line down to my stop loss (sell) order and straight back up. The stock was at like $2.80 and the stop loss was at $2.20. They, him, it, the monster just went down and took it out and it went right back up. Try putting in your stop loss now, on the weekend, you're safe. Most brokers won't even let you put it in ... in the penny arena.
Bob