Users appreciate the WordPress Image CAPTCHA plugin for its simplicity, efficiency, and ease of configuration. Many reviews highlight its effectiveness in blocking spam without being obtrusive or complicated like Google's reCAPTCHA. The plugin's support team is also praised for their prompt and helpful responses. Users find the plugin fits well with multiple languages and is GDPR compliant, feeling confident in its reliability and long-term support. However, there are drawbacks, such as inconsistent language translation behavior, specific configuration issues with certain WordPress versions or themes, and the plugin’s impact on all forms, which can cause problems if not configured correctly.