In case you didn't already know, Shopping.com which is owned by Ebay offers a Pay-Per-Click affiliate program for anyone with a website. I'm not sure how much they'll pay you but it sounds interesting. Check it out at this link: https://partners.shopping.com/app
I did not know it was owned by eBay, this changes everything... I thought text-link-ads.com owned, which would be bad as text-link-ads.com has tumbled to the ground. Well I guess I will give it another shot, I used them in the beta stages months ago and did not like the results, we will see how it goes now.
Let me know how much you earn. I might want to join as well. Since their ads aren't the same as adsense ads, you can probably supplement your adsense income.