If you've ever shopped online, you've seen the box provided for "special code" or "promotional code." This magical savings box shows up somewhere between your online "cart" and the act of inputting your credit card information. These offers allow you to enter a series of numbers and letters to receive anything from 25-percent off to free shipping.
These are, in essence, digital coupons provided as incentives to repeat customers or members of the site's rewards programs. You don't have to be...Full Story