Online coupons not always honored by merchants

When you buy an online coupon, how do you know it will be honored? Edgar Dworsky walked into a restaurant with a $6 coupon he?d bought for $3 to find the owner knew nothing about it.

Source: http://pheedo.msnbc.msn.com/click.phdo?i=fff40ceb2ee59742600dd44e9228755d

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