One of the biggest problems facing any website owner, especially when it comes to reviews/comments, is spam. Unfortunately there are people out there would want to do little more than spread something as much as possible by posting it to hundreds, maybe even thousands of websites comment and review boards. To combat this there have been several methods instituted. One of the most successful, although still somewhat susceptible, is captcha. Captcha codes aim to prevent bots from passing by requiring the user to enter a somewhat difficult to read image.