@Avalon37 - and everyone else.
I've used their Associates program, as recently as last month, and their stock images/creative are terrible.
I have successfully been with Amazon, as an Associate, for over 16 years now. What follows is factually correct:
a) Putting up banner ads, or anything Amazon offer is rarely successful.
b) Any "shot gun" approach will NOT work. There are 100 million similar sites around already.
c) Targeting specific product
relating to your genre, accompanied by a review, is usually successful.
The many successful Amazon Associates I know all have a large following in their particular genre, and their site content and reviews are respected, and trusted.
It will take people years to build up that kind of following.
Amazon, even CJ, does not necessarily fit in with every decent content site. [Added:]
As for the subject of the topic? I'll adopt my customary "wait and see" approach.