— Check it out!
An excellent blog about contextual advertising, Google AdSense, and the Yahoo! Publisher Network. jensense.com
— A blog devoted to SEO, search engines, search marketing trends and web browser technology. traffick.com
WebmasterWorld AdSense Forum
— The AdSense experts hang out here on the WebmasterWorld AdSense message board, but be sure to check out the other sections of the forum. An enormous wealth of information from webmasters making money with AdSense and offering tips and advice. webmasterworld.com/google_adsense