In general, I am such a happy Amazon customer that it pains me to say this: “fuck you and that obnoxious pop-up-every-N-seconds Sprint ad”. Yours is one of the few sites where I have permitted Flash to function, because you generally use it in manners compatible with my wishes. Popping up a large ad every time I try to read the details of a product, and forcing me to dismiss it by moving the mouse, is Bad Form.
I note that it is exceptionally difficult to offer direct feedback to you regarding such things (asking me to clickthrough on an embedded Flash ad is not an acceptable means of soliciting feedback on it), so consider this a public notice that I am now blocking an assortment of URLs on g-ecx.images-amazon.com in order to restore functionality to your site.
Oh, and Sprint? Die in a fire. “will not buy”