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After trying a new shampoo for the first time a man fired off an enthusiastic letter of approval to the manufacturer.
Several weeks later he came home from work to a large carton on his porch. Inside were free samples of the many products the company produced: soaps, detergents, tooth paste, and paper items, etc.
"Well, what do you think?" his wife asked smiling.
"Next time," he replied. "I'm writing to General Motors!"