Discount coupons that can buy you products at a discounted rate are known as discount vouchers or discount coupons. They come as a part of the usual advertising strategy during festival seasons and holidays. Discount vouchers have become quite common nowadays. Introduction of online shopping discount coupons can be termed as one of the main factors that led to their recent popularity. In the online marketing world, these discount discount coupons are termed as voucher-codes or promo codes, wherein promo stands for ad or promotion.