Sales of the spongy stuff are on the rise—even though it's not cheaper than meat
                                
                                
                                    (Newser) -
                                    Americans have gobbled up Spam for 71 years, despite Monty Python parodies and countless jokes about the spongy stuff. But Spam's sales have spiked 10% over the past 12 weeks, as the economy has gone sour and soaring gas prices have been gobbling up household income. In fact, it's no...