gengar56 - 7:46 pm on Dec 17, 2003 (gmt 0)
At the moment I am using BannerBoxes as my AdSense alternate on one site. It isn't by topic exactly - it's by keyword, but I choose the keywords which the ads are targetted to. The revenue is pitiful - it seems to be less than 1 cent per click. But their minimum payout is just $5.