you guys may have visited sites that uses captcha but have you ever thought that why they uses captcha if know then let me explain you in a short detail that why some sites uses captcha.

It is very simple to know why they do so , they do this because they verify whether a human is using their site or a robot , if a bot will be using then bot will not be able to verify the captcha. To get real traffic many website do this and make their site more secure and better by using this method.

If you guys also wants real traffic and want to secure your site then you may also add this to your website for the purpose of making your site better.