Thanks! I've gone back and forth on the scrolling animation. There's definitely a balancing act between trying not to be annoying and trying to make money. At some point I'll have time to do a real A/B test and come to a more informed decision, but for now I'm thinking that the site is so free of the normal distractions (no pop-ups, only one section of ads, no video, no flash crap, etc.) that I'm comfortable being in-your-face with the scrolling animation. I'm on the fence though, so I guess I'll need to give it some more thought.

Personally I only think it's annoying if you're only skimming the article and scrolling fast. What about pinning the affiliate images fixed above, but scrolling a smaller, less intrusive "Find all the ingredients for this recipe here". And possibly instead of scrolling, fade it in. (Just my $0.02)

That's a great idea. It actually solves a big problem that you might not have even thought about. One of the challenges with having the ads scroll with the page is that it means the ads can't take up much vertical space (because small screens wouldn't ever be able to scroll to see the bottom section of the ads). This means that we only show a maximum of four affiliate links per page which sometimes isn't enough to cover the core ingredients. With you idea we could have as many affiliate links as we wanted without losing the ability to find the ingredients after they've scrolled down.

I'd guess this would lower the click-through-rate, but it would probably increase the average orders per click, so it might work out. Thanks for the idea!