February 13th, 2009 | 
Author: When building your site that you want to use adsense on, the process revolves around getting highly ranked in the search engines for your target keywords. The reason being that you will get more visitors and more visitors equals more adsense clicks equals more income.. Fine, but it doesn’t end there.
A few years back, google in their wisdom decided to give advertisers the opportunity to regulate how much they want to bid for ads on the content network which had a massive effect on how much income adsense publishers suddenly made. Instead of $1 per click they were getting 5 cents per click. This lead to the spate of adsense is dead theories that circulated around the IM community.
Since then, google have evolved their content network mechanism for advertisers to the point now where they have massive flexibility as to where they can place their adverts on adsense sites. An advertiser can now bid on any page that has adsense on and either pay per 1000 impressions or per click. This is where it gets interesting for us adsense publishers.
The system that most advertisers are having great success with is to find the top adsense sites for their keywords and locate the actual page that is ranked highly and place an adwords ad directly on that page. Why is this good for us? Well, when we get our sites ranking highly for certain keywords they become very hot targets for advertisers who do placement targeting. When they become hot targets you will start to see massive increases in earnings per click.
This is why it is better to find the pages that are doing well on your site and get as many good backlinks using your target keywords as anchor text. So long as you have done your on page SEO right and understood how to create a good site for adsense then you will eventually hit the top spots for the best keywords. When than happens, you will see the both edges of the sword, high amounts of visitors and top advertisers placing ads on your site.
Nice observation. I never thought of how getting to the top in serps could help in this way.
Essentially what you are trying to say is, or that is what I derive from you observation, is that pages on google top serp are getting more revenue per click compared to those who are not, which makes a lot of sense.
Happy writing.
John
Generally you are right John, it is to a certain extent niche dependent but the pages that I have ranked highly for certain keywords will definitely see an upsurge in CPC.