Hi,
I am under the impression that any amazon affiliate link should have a clear distinction to be "legal". So, Boxes with products are fantastic since they display the product, show the amazon colors, and its clear to the visitor is an amazon link. Also Boxes with products have better Conversion rate than an inline amazon link.
But I wanted to touch base with you guys.
I recently got hired at a blog that has lost almost 90% of traffic, and I am searching for motives. One I blame is that old posts have 10+ amazon inline links, and they are blatant and obviously added at random, sometimes dont even relevant to the article at all.