There is a great tool available that allows you to check out the highest cost-per-click (HCPC) keywords for Google AdSense, allowing you to write content with the highest-paying keywords in mind. It is the Google Adwords Keyword Tool and it allows anybody to view the highest CPC keywords, for free, without having to log in or sign up. It was created to help people come up with new ideas for their AdWords campaigns, but you can use it to see which AdSense keywords will pay you the most so you can target your site's content for high CPC and generate higher advertising revenue. This tutorial will show you how to find these keywords with the AdSense preview tool and how to use that information to increase your cost per click.