If you shop on Amazon a lot, and i suspect lots of people do as the prices and delivery are unbeatable really then you'l have no doubt looked at the cashback sites like Quidco. But Amazon do not have any deals with hardly any of these sites.
Here is a way to get 5% cashback on all your purchases.
1) Sign up for an Amazon associates account (use a different e-mail than your original Amazon account).
2) Create an affliate link and place it on your website or blog, just make a free site and paste the HTML code - almost all sites get verified pretty quickly.
3) Whenever you want to buy something from Amazon, go to your free site and click that link to go to Amazon and buy stuff with your original account.
4) Once the item is dispatched you will get 5% referral fee.