When choosing the right Captcha for your site, there are a number of things that you should look out for:

Always display a Captcha when an anonymous user is completing a form to protect your website from spam

Always display a Captcha when a user is posting content to your website

Choose the theme that best fits your website (we provide these for free)

Customize the skin to fit the style of your website

Customize the Captcha with your own brand or marketing message

Choose a Captcha that is easy to use and won’t turn your customers away

Choose a Captcha that is secure and will protect your website from an attack

Choose a Captcha that will dynamically adjust the security settings to meet the needs of your users

Choose a Captcha that follows security best practices