A Coupon is a redeemable document for financial discount. It's often used when purchasing products or services. Coupons are codes issued by brand owners for use at a retail store.
Coupon submission is one of the strategies for building natural backlinks. Although this is not the most effective way to build quality backlinks. But you can generate traffic to your site when you submit coupon codes to sites.
Coupon code sites are sites that allow you to share your promotional codes to promote your site. Many online shoppers visit coupon submission sites to check for coupons on a daily basis. So when you use these popular coupon sites, you can generate tons of traffic to your site.