Ask HN: Has anyone had success with Amazon Affliates?

I've been running affiliate links on the book reviews on my blog. Stats here: https://gist.github.com/swanson/4711006

It makes about $20/yr.

At least as good as Adsense for me, but payments outside of US are horrifically slow. It can take even up to 4 months to receive the checks. It's like Amazon has never updated their affiliate program since they started it a decade ago.