Oh but they weren't forcing the customers to go to smile and strip the affiliate attribution for their session. Why, they don't even provide a link for the customer to click! The customer is choosing to actively navigate to smile themselves (when prompted by t he reminder at the top of the amazon page). So obviously that means Amazon can't be accused of doing anything nefarious to screw their affiliates (or, more seriously and litigiously, their advertising partners) out of their due credit for the sale. The customer simply chose to switch to smile. And it's all for charity so who could possibly complain?