If you have used Market Samurai software, you will be amazed to see how they have integrated the adwords keyword tool into their search results. The tool fetches the adwords external tool captcha and takes the user entry for that captcha and once the user enters the right captcha, it goes to adwords and fetches the list and displays in its own format. I am sure they don't pay anything for Google as they show the captcha etc. Can you please guide me on how to use that ?