While the actions on their website itself tend to work well, I have have a number of problems with their shop and earn system. They have blamed it on multiple tabs open at a time however the stores offer open separate tabs for information or comparisons so there is no way around that. They refuse to pay out the cash back which in one instance was over $200 for a new computer. Use at your own risk and DO NOT FACTOR THAT INTO THE PRICE LIKE I DID!