Omnivorous Surfer

The Internet provides lots of ways to help save money. Of course, most of us know about price comparison sites that help you find the cheapest price for a variety of items for purchasing at the listed site or for using the pricing information to purchase offline. Some of these sites include shopping.com, mysimon.com, shopping.yahoo.com, and pricegrabber.com. There are also sites like overstock.com and the clearance sections of retail sites that give access to online bargains. But there's more...
This obviously isn't an all inclusive list, but it's at least a starting point to begin looking for thrift help on the Internet. These sources were included in a Reader's Digest article in the October 2008 issue.
Codes. When you checkout from many online sites, there's a place to put a code that will give you extra discounts. Well, when you're at that point in your purchase, check out one of the sites that offer currently active codes. These include retailmenot.com, currentcodes.com, keycode.com, and rather-be-shopping.com.
Coupons. You can find coupons, rebates, and Sunday newspaper circulars listing weekly deals at dealcatcher.com.
Shoes.  You can order shoes with a free return policy (they also pay return shipping!) from zappos.com. This site carries a wide variety of types of shoes. For athletic shoes, try holabirdsports.com.
There's just too much in this two part article, so for even more sites and suggestions, see both parts on the Reader's Digest website:
Get a Great Deal on Anything and
More Ways to Get a Great Deal on Anything