Joel Comm, a friend of mine who’s been making a living online for many years, has released the second edition of his Google Adsense Secrets e-book(aff.). If you are using or considering using Adsense, I urge you to check this out. Success at AdSense is more than just slapping ads up on a page. Interestingly, as with traditional direct marketing, AdSense is something you can measure, test and optimize. I remember when Joel was only making a few dollars per day from Google. Now he’s up to over $500 per day from Adsense. Seriously. This is not marketing hype. I’ve seen the the reports from Google. Check out Google Adsense Secrets here.(aff.)