The truth is, nobody likes using websites with a lot of spam, pop-ups and of course, CAPTCHA. In fact, in every registering form, sending email, membership in a bulletin or anywhere else in a website where you have used CAPTCHA, and the user is asked to write the not-so-very-clear numbers or letters may damage your CR and drop it. The reason websites use CAPTCHA in the first place is to identify human users. Also, some security issues; for example, they want to ensure that no spam emails are sent, and a human being has filled the forms. However, this matter sometimes makes the user run away from the website.
We offer two solutions for that:
1. Temporarily cut the CAPTCHA, which may cause you to receive spam emails, but it is worth it since it helps your website's traffic and CR revive again.
2. Using a more user-likely CAPTCHA like reCAPTCHA (Google owns it, it is free but with limited functions) and NuCAPTCHA (the Canadian company NuData owns it in the form of videos).