SEOVibe

Months of testing and optomizing for better "earnings" has led me to a conclusion that I find is self defeating at best.
On this particular site i'm finding:
- The highest click through rate is with just one ad unit smack in the middle of the top heat zone, nicely blended of course.
- The highest earnings per click is with the ads hidden away towards the bottom of the page, the ad up top removed.

With the ads at the bottom visitors aren't clicking off on them on the first page they visit as often. This sites bounce rate matches the earnings per click at every step. As the bounce rate goes up, the earnings per click come down and vice versa.

The site is not an MFA site by any means. Its becoming apparent that if someone clicks on an ad from the first page they visit that they increase the average bounce rate and I earn a reduced amount. Is the best way of keeping bounce rates low, and earnings high, to simply not show ads until a visitor is looking at the second page of his/her visit?

I could easily code my site to not display AdSense on a visitors first page but would that violate the terms of service? For this site at least its simply not worth having someone click on an ad from the first page they visit, it's costing me money and traffic.

Is this new? is it possibly to combat MFA sites who try to get visitors to click on ads right away? Thoughts?