Are Coupon Sites Legal?
While, generally speaking, most companies do not object to people sharing coupons with friends and family members, the act of collecting coupons for profit goes against coupon usage terms and it is illegal. The risk of ending up with counterfeit coupons increases when buying coupons online.
It's illegal because it's a form of counterfeiting. If you create your own coupons on your computer, designing them to look just like legitimate coupons, that's coupon fraud (and counterfeiting) too. Last year, the FBI arrested someone for doing exactly that.
Ask an Expert: Can Online Coupons Cause Viruses? - Yahoo Finance
Can you go to jail for using coupons?
Coupon fraud is a punishable offense and, while penalties vary case by case, the Coupon Information Corporation (aka, the CIC) says that the harshest convictions for this type of fraud include a 17-year prison sentence and a financial penalty of up to $5 million.
Being Aware of Coupon Fraud - Protecting Yourself
Use a trusted source. The better path is to check websites such as RetailMeNot, DealsPlus, Coupon Cabin and Slickdeals. These sites work with thousands of retailers and brands, as well as user submissions, to aggregate sales and codes. At RetailMeNot, all codes are tested and verified before being published.
Nine tricks for getting the most out of online coupon codes