If you are shopping freak but want to save bit money too then shopping with the vouchers can be a good option. This does not mean that you have to shop online and wait for next discount. You can get vouchers on websites or any advertisement source and can enjoy your products. You can also get free vouchers. Free Vouchers are available for mobiles, airless, school, grocery, restaurants, etc. Even if you want, you can gift someone Free Voucher which would save your money and time. These Free Vouchers are helpful because they offer you to buy online. Some website has Free Voucher facilities like earn points and redeem your voucher to do shopping or buying any products or food.  
You can get these vouchers if you search on website for the free products available to you instead of that voucher. Other than this, these vouchers are also advertised in the newspapers. These vouchers are easy to use as some website offers you box where you can write the code or give information regarding your voucher code while there are some websites which offer you to print those Free Vouchers and present to the retailer or the restaurant to avail you offer.  
This is a system of advertising to the customer so the customer get attracted towards the vouchers or discounts and the benefit will be of both even the customer and the retailer. This definitely does not mean that the manufacturer is bearing a loss of business with free vouchers. This is like an investment by the business owner.