This is so easy!
Click on the following link for ebates
First, create a login and you will get a $5.00 credit!!
All you have to do to get this free $5.00 is to click through them to one of your favorite online retailers, everybody is there, and purchase $25.00 worth of products within 3 months of signing up! You will earn cash back on that purchase so you get a discount for doing this too. Once you have done that, click on the above link again if you want, and go to "My Ebates" up at the top of the page. Enter your name and address where you want them to send you your check. They pay out every 3 months that you shop with them.
So take advantage of sale prices and other offers, and on top of that earn cash back! There is no software to install, no toolbars or search bars... none of that stuff. There are no fees of any kind.
There is nothing to lose on this one except to stop paying full price for everything!