out of curiousity how many actually use direct short selling (as opposed to shorting via derivatives or via CFD's etc.) and if using direct short selling how long are you able to keep positions open?
I use direct short selling through Mac Prime, as far as I'm aware I can keep the position open for as long as I want, but I'm sure they could close the position at any time to "reclaim" the stock but that wouldn't happen very often I wouldn't think.