Trying to prevent shorting is just silly. If you're a committed long who feels this is a buying opportunity, then you should want short-selling at these levels. Currently there are 30million shares sold short with a 1 day to cover rate based on current trade volume. This is a perfect time to build your position (buy shorted shares) and take advantage of lower prices in a negative news environment. The fuel that feeds giant upward price moves in the stock market is the covering of short positions...so don't try to keep your shares from being sold short, encourage it! Today's short seller is tomorrow's panic buyer!