You only receive credit when you use the merchant link at these cash back websites to your favorite store. You can return the purchases you make at the merchant's website that are subject to the merchant's normal return policy and the cash originally credited to your account is returned as well.
On their websites you can also save as there are dozens of major coupon websites out there who are pulling in the latest deals. You can go to a few websites or you can do a quick Google search and find the deals. For instance, if you type in Macy's promo codes you should