On the Trail of the Holiday Shopper

Along with explaining why e-tailers must woo seniors, consultant Paco Underhill reveals what smart retailers are up to in their restrooms

Paco Underhill is watching you. No, he's not a G-man or part of the new Office of Homeland Security. Underhill is a retail spy. As founder of consulting firm Envirosell, it's his job to find out what consumers are buying and why.

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