Hi, I have seen softwares like Market Samurai which require you to enter captcha to process keywords from Google Adwords tool. Also I have seen seobook keyword tool which fetches the same data without requiring you to enter google captcha. I want to know if it is possible to use Google adwords keyword api free of cost by entering the captcha every time you use the same. Or do you have any other keyword tool API which is free to use without requiring to pay anything - I just want a keyword service and nothing else.