Yet another way to make a few bucks on your blogs and websites; this one looks like a real winner. In affiliation with Text Link Ads and eBay, Auction Ads displays current eBay auctions on your site based on keywords you select. I rec'd this promo from them this morning (click on the image to see it in full size): 

Editor's Note: I displayed the ad on my AMG Mercedes-Benz | Enthusiasts blog. The ad was placed in the sidebar for a little over a week. Unfortunately, there were only four clicks and no revenue. Therefore, I removed the ad due to its poor performance. Let me know if you try it and you get better results.