I had a similar idea a few years ago. I thought my idea was original but when I did my research, several companies have already thought of it. Microsoft http:/

I had a similar idea a few years ago. I thought my idea was original but when I did my research, several companies have already thought of it. Microsoft http://www.internetnews.com/webcontent/article.php/3836421/Microsoft-Seeks-Patent-for-CAPTCHA-Based-Ads.htm http://www.internetnews.com/webcontent/article.php/3836421/M... Yahoo http://www.faqs.org/patents/app/20090012855 http://www.faqs.org/patents/app/20090012855 Ad Captcher http://adcaptcher.com/ http://adcaptcher.com/