By DAVID POGUE
New York Times
You might think that this column is about Groupon.com, the white-hot Web site whose coupons save you 50 to 90 percent at local businesses. But it’s not. It’s about psychology.
You might think that this column is about Groupon.com, the white-hot Web site whose coupons save you 50 to 90 percent at local businesses. But it’s not. It’s about psychology.
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