The number one place I never shop online is Amazon. I find their site is simply too convoluted, they seem to want to make you take as many steps as possible to buy something or check out.Additionally, they store by credit card number and I disapprove of any merchant that does that. Since they can authorize transactions with the same information, they must have saved the cvv2 code as well.. which is a nono.
Off line the place I never shop is Walmart. Fortunately, I have no lived in a country with Walmart for years. Once you've been away from that kind of store you lose all interest in it.
Another American who lives near by is always going out to the Walmartish store in the area. What a waste.