Hey Rick,
That is a good article that includes stuff that I think most people don't think about. I have always thought it to be a mistake of website publishers to automatically deliver AdSense ads on every single page of their website. There is no reason to compete against yourself. Selective placement is best.
And unfortunately, he's right. In many of the high paying areas (ex. home business, email marketing)....you get really crappy ads. It's something everyone has to consider and plan for.
Thanks for sharing,
Alice