Stocks and ETFs rebounded from four-month lows in heavy trade as lawmakers started talks Friday to avoid the treacherous fiscal cliff that threatens to throw the country back into recession. In afternoon trade, SPDR S&P 500 (SPY) was ahead 0.32% to 136.14 in nearly double average volume. PowerSharesQQQ (QQQ), tracking the 100 largest nonfinancial stocks on the Nasdaq, rose 0.28% to 62.20. SPDR Dow Jones Industrial Average (DIA) shed 0.12% to