Wow. This site used to be good, but now they go downwards. Many of the attractive cashbacks do not track correctly. Especially the so called premium or top cashbacks. Always have to fight for them with claims. And the claim always ends with the retailer declined cashback. Despite the site ensures you they track your activity. In the end, for claims, you provide the details of the order and time (which strangely always is conveniently available on quidco). So my guessing is quidco always gets its shares from retailers, but the top cashbacks are just to lure you in for your activity.