OK. You just bought this paperback, we won't show you ads for it anymore. What are similar things... this hardback version of the same book, are you interested

OK. You just bought this paperback, we won't show you ads for it anymore. What are similar things... this hardback version of the same book, are you interested in it? And Booking.com should just learn to delete all that they know of my searches when I actually book something.