I understand that people are cynical about this add-on but I can attest that it really works. I just saved 40% off a set of tires simply by using this extension. And this was not a savings on an artificially inflated price, this was savings on an everyday price at the site. I've saved $30 dollars on an RC plane. I've used it to save 10% on Walmart orders. I've gotten money back for purchasing items at Advance Auto. I order items for my job and I'll use it to make a few bucks on things like printers and whatnot. I've used $65 of my earnings to purchase ebay gift cards which I used towards a new cell phone I just purchased. I have somewhere around $320 in rewards I can use to buy gift cards. It simply works!