Pimping adsense?
 

If you're slinging adsense, you may want to swap your ad rotator system a few times and see which system helps you achieve a higher CTR. Here's a list of 7 tools. You should also consider the very flexible Quickadsense plugin available at the main WP site.

If you are thinking of applying for adsense, check out this checklist first to increase your chances of getting an account quickly.