Professional hedge fund managers have poor enough track records compared to market indexes. Ordinary investors won't do themselves any favors by mimicking hedgies' temperaments on a smaller scale. Tempting retail investors with day-trading riches is like playing with fire in an environment when risky loans to subprime borrowers are back in vogue and the continuing financial crisis in Europe adds extreme risk to American capital markets. I'm not playing any fantasy stock game. I'd rather preserve my real portfolio.
Full disclosure: No position in YHOO at this time.