There's no more potent mar-keting device than fear—which neatly explains why vendors of shredders are raking it in. Shredder sales have grown 20% to 25% a year for the past three years, with sales of home shredders growing even faster, reports the School, Home & Office Products Association. The number of firms in the shredding services industry has quadrupled to 2,000 in the past five years.
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