I've heard there were a few people that really 'knew their stuff' in this area, and was also told there's no way under the sun they'd ever share their secrets. I've asked around for a recommendation... no leads whatsoever. So I waited - but watched. And today - thanks to Harvey Segal - I found what I was looking for!
What is it? It's a . Its all about maximizing your earnings with Google Adsense: how to position your Ads, which styles to use, which pages to put them on... and how to display Ads with higher commission, even! To quote the author, William: "The amount you earn per click on an ad varies enormously but you can control how valuable these clicks are if you know the secrets (Chapter 22, Chapter 30)". Also: "Learn how to calculate Google's payout ratio (they won't tell you, but you can find out.)"
This is stuff you wont find anywhere else. Check it out: http://www.selfstartersweeklytips.com/adsense-guide.htm
You also get membership to the AdSense Insider Group - so if this something you've been looking for, too... I'll see you there!