Some time ago we implemented an online shop for a large food discounter. A couple of weeks after the launch, statistics showed that the implemented product page [1] in the shop had been rarely visited. Actually there was nothing wrong with this product page. If anything, it was a very thoughtful one, with a nice clear layout and a quite complex, but reasoned backend logic. The customer put a lot of energy into mapping all possible business scenarios, specifying details and possible exceptions. The user experience guys were happy. Everything was perfect.