g8oz writes "The New York Times covers Wal-Mart's obsession with collecting sales data. Fun fact: 'Wal-Mart has 460 terabytes of data stored on Teradata mainframes, at its Bentonville headquarters. To put that in perspective, the Internet has less than half as much data, according to experts.' That much information results in some interesting data-mining. Did you know hurricanes increase strawberry Pop Tarts sales 7-fold?"