I recently signed up for Chitika mini malls. I put them on another site, just to see what would happen. So far, in for weeks, I've had four clicks for $.59. What I like about Chitika, is that they will send a payment via PayPal when your balance reaches $25.00.
I had signed up for Bidvertiser. But in two months I had zero clicks. So it was "Bye-Bye, Bidvertiser."
So far, Adsense is still the champ. I've been using AdSense since September 2004, and once I launched this blog in December, I have accumlated $84.63. It's not much, but it's more than I have collected on Amazon or PayPal during that time.