Dangerous indeed!...
I shorted a stock in early 2000. It was the Tech. boom time, and that stock had gone up from teens to $46 dollars in couple of weeks...
It kept going up all the way to $96. Tens of thousands later, (Keeping the margin call covered), it collapsed in mid 2000, and it is $.31 cents now selling in pink sheets.
That is when I decided never to do that again, and instead bought EDIG...Lol...Lol...
Gil...