If market makers can short-sell a stock, then the people should be able to as well. It's not shorting that is hurting some of these stocks, but over-shorting, or shorting shares that do not exist to be borrowed.
Believe me, you may very well want to look into shorting the market, unless you expect it to go up forever, which I believe ended back in 2000! The secular bear is taking over in '05, short-selling overpriced stocks is a good way to make cash in a bear market, but so are put options.
I know if I were back in 1929 with a bubble Dow, I wouldn't have wanted to NOT have the opportunity to go short! Remember the shorts eventually have to do the inverse and act as buyers to cover their shares. It all works out in the end. So don't confuse legitimate short-selling of equities with Wall-Street and market makers abusing their priviledges to steal from the average poor retail investor!
HI-HO SILVER !!!