"Cashback websites" refer to online platforms that give you a portion of your money back when you make purchases through their affiliated links. Full definition
You may be able to get cashback for specific energy providers via cashback websites. (moneysavingexpert.com)
These shopping portals work just like cashback websites only you may be able to earn extra rewards by going through the one operated by your credit card company. (thecollegeinvestor.com)
You can shop for travel on cashback websites like eBates, to increase discounts. (thefashionablehousewife.com)