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Why We Buy: How to Avoid 10 Costly Cognitive Biases — PsyBlog Save
Saved at 01 Apr 11 -
It’s Not the Online Coupons. It’s the Psychology. - NYTimes.com Save
Saved at 24 Feb 11 -
The Effectiveness of Groupon: Infographic | Digital Buzz Blog Save
Saved at 24 Feb 11 -
Review: So many coupon sites, so little time - Yahoo! News Save
Saved at 24 Feb 11