With my own sites, this is what I ended up doing: I've typically linked to Amazon and eBay regardless, from time to time (I run news sites about NIN and Tool).

With my own sites, this is what I ended up doing: I've typically linked to Amazon and eBay regardless, from time to time (I run news sites about NIN and Tool). When I finally decided to sign up for affiliate links, I started getting money when I linked to Amazon and eBay. The prices weren't any higher for my readers - at worst, Amazon or eBay get a little less of a profit, but in exchange, get traffic from my site. I haven't changed the main content of my site - the news portion - and if an album comes out, I'll post pre-orders for Amazon, Best Buy, and anywhere else that takes pre-orders, and I continue to emphasize the cheapest one, even if it's not Amazon. With eBay, the affiliate program got me interested in utilizing their API, with which I built some smart filters and created a page on my site where you can buy secondhand records and posters (which aren't available new) from a list that I maintain, keeping out bogus vendors and counterfeits. I built something that I as a reader would actually use. If you allow your affiliate links to dramatically change how you post, that's kinda crappy. But I think I do an okay job of integrating affiliate links in an appropriate fashion.