Ever wondered what all the barcodes, numbers and writing around the edge of a valid internet printable coupon mean? It's easy and will help you understand why it's important not to copy your coupons.

Using coupons is a great way to save money -- that is, if you have time to clip them or search for them on the Web. But a lot of us don't, or we accidentally leave the coupons at home when we go to ...