Google says there's no harm in having a lot of affiliate links on a page if the main content adds value to the web. Mueller goes on to say that Google needs a reason to show a site in search results, and that reason is usually because it has valuable content people are looking for. Beyond tagging affiliate links with rel=”sponsored”, attempting to further optimize these links is “wasted effort.” Mueller says content that copies what’s on a retailer’s site is an example of something that will have trouble gaining ground in search results. “What we care about is the content and kind of why we would show your pages in the first place. And if the content of your page is essentially a copy of a description from a retailer’s site then there’s no reason for us to show your site even if you had no affiliate links. So you really need to first have that reason to be visible in the search results. And then how you monetize your site, or what links you place there, that’s essentially irrelevant.”