today's volume was only 2000 shares....2000? At 5 bucks that's 10000 worth of trades. That's dismal in terms of liquidity. It is common not to find shares to short on low liquid stocks. You can also expect your broker to call your shorts soon.
1. Low liquidity: A player with sufficient financial muscle can push this stock as high or low as he pleases. Reading charts give unpredictable results.
2. Low price: For both long and short, low price can mean high profits or losses.
3. Splits, takeovers and other acts of god: Basically if you are on the wrong end, you die a terrible agonizing death.
The key to making money in shorting is to minimize risks. Risks must be taken, but they must be deliberate and calculated.