I have not had a problem with Capital One Shopping yet. I have used it five times and each time it tracked properly and they did credit my account with the appropriate reward. If you don't see a gift card that you like then check back every week or so because they're constantly adding and removing gift cards. My only issue with them is that the cell phone offers completely lack in detail. Do I have to buy a plan to get the cash back or do I have to buy a phone to get the cash back or do I have to buy a phone and a plan? I have written them about the lack of detail in these offers but they don't seem to care. If they are not clear enough, then I simply won't participate