A little-known secret at Zappos is that they do cut people off who abuse the generous return policy. CEO Tony Hsieh explained to me that if a customer blatantly takes advantage of them—returning worn shoes on day 364 of the 365-day return period, for example—they’ll honor the refund once, but they’ll also gently advise that customer not to purchase from Zappos anymore. Fortunately, he also said, most people are honest.

