Also from Investing for Dummies:
"Risk/reward analysis dictates that stocks are never shorted when price is near zero"
"Never pay a 20,000% buyout premium for a company. In fact, though it probably doesn't need saying, never pay a 20,000% premium for anything. Ever."
Another famous quote from Buffet:
"Why would anyone own stock of a company that refuses to comply with SEC reporting requirements and offers no transparency to investors?"