Yeah, that was definitely a bad choice on Amazon's part.
I just glanced at one of my product pages. There's a thirty-five page "Products Related to this Item" slider (ads with a little sponsored label above it). Further down, there's another twenty page PRTTI slider (as if one weren't enough). As if anyone is going to sift through that many pages of ads.
Near the bottom of the page, we also have "Explore Similar Books" (4 pages), and "Books You May Like (12 pages). I don't know where the former titles come from, but at least, they're all in the right genre, and some of them seem to be thematically related as well. The latter I'm sure comes from my earlier shopping, and aside from a couple of seemingly random titles, they relate closely to prior purchases. As a customer, I might find either of those useful, though they are far enough down the page that I don't know how many people actually see them. Of course, there had to be room for a nice, big banner ad for Violent Night, a movie with no obvious relationship to my book.