I’ve managed millions of $ in paid search, I can say that the author has the right to be mad, but is a bit misinformed. You CAN opt out. I always encourage clients to OPT OUT of content clicks and only bid on Google Search traffic excluding their own brand terms. Also, the author uses “Google Adsense advertising,” which is the wrong terminology, because Google Adsense is not advertising, it’s ad publishing.
Half of Google Adwords Traffic is from Worthless Link Farms – duh! April 8, 2008