Check out Ebates

If you are an avid online shopper you may want to go check out Ebates.com. They offer rebates for shopping online at over 900 stores. Yes, 900. Most major retail stores such as Target, Macy's, Barnes and Noble, etc. offer between 2%-6% cash back. Just to give you an idea of what they have to offer, here is just a small sample of stores and their cash back value-

GNC 8% cash back
Lens Crafters 9% cash back
Zappos 10% cash back
Clarins 12% cash back
Restaraunt.com 15% cash back
Magazines.com 25% cash back

With that being said, here are a couple of things you should know before rushing to sign up.

1. They only send out payments every three months. So, if you are looking for fast cash this is not the place for you.
   
2. You have to accrue $5.01 in your account before you receive your payment. So, if you only shop at major retailers online occasionally this is not the place for you.

If, however, you do most of your shopping online this is a great site to take advantage of. Their list of retailers is astounding and they offer coupons for stores on their site that do not offer cashback. So, you save money either way.