Stocks keep rallying, and investors keep ignoring the major warning signals coming from corporate profit forecasts. With earnings season nearly done, 86 S&P 500 firms have issued guidance: 54 negative, 26 positive, six in-line. Q1 earnings growth is set to drop sharply, to just 1.2%; earnings are on track to rise 8.3% Y/Y in Q4, and 16% for all of 2011.