Product Affiliate Site - How Bad Would It Kill Conversions

I like the concept of TopTenReviews, probably you've seen that site before.

In short it's 7-10 products per category that they write review / provide information for, and all those pages link back to an overview page with a comparison chart and such. I just saw they broke down the tabs of information into pages as well so it's like some sort of silo structure of 30-40 pages that link back to the optimized sub domain overview page.

The overview page ranks best (cause that's where all the links are pointed at and it's obvious very LSI rich) and all the supporting pages help obvious.

Now I don't see any affiliate links on that site, only Adsense blocks, makes me wonder but well.

In case of affiliate links, where would you place them?

- On each product page?
- Only on the overview page?

Nowadays it's important to have plenty of pages with no affiliate links or you will tank sooner then later so hence my question what would convert better.

Having them on the overview page or on the product pages?

Personally I think the overview page would be better as that's where the visitor probably would end up on most of the time and it would also help getting rid of the thin affiliate site tag that Google might put on your site.