Plummeting prices last year brought many stocks down 50% or more, so that their yields now look extraordinarily high. My database now shows 63 stocks with annual yields of 20% or more. But there’s something wrong with these stocks--business at every one of these high-yielding firms is faltering. The stocks’ plunges tell us that. And while the yields may look high today, they’re based on the past 12 months. If business shrinks, the dividend will shrink more. And if the business shrinks, the stock price may fall further, too. All in all, chasing these super-high yields is a dangerous game, suited only for professionals who can determine when the selling has been overdone and when the dividend is secure.