Free AdSense Web Tool
This tool lets you preview Which Google AdWords will initially be shown on your web page. Enter the page that you would like a report on, select the size that you want displayed, and click on the “Show Me” button.
This will give you the google ads that are most like to be displayed. Based on the results, you could decide to tweak your content using a keyword suggestion tool, to deliver more relevant google ads, and maximise your revenue.
I found this tool to be quite accurate in the ads that it threw up for one of my other sites (WildBlueSkies.com) where I do have Adwords.
The site also has a page on tips to maximise your revenue using Google Adwords.
google adwords keyword suggestions tool…
Generate huge laser-targeted low competition, high demand keyword lists in minutes….