Users appreciate the WP Super Cache plugin for its ability to significantly improve website speed and performance, often highlighting its simplicity and ease of use. The plugin is effective in reducing server load and enhancing page load times, which is especially useful for anonymous traffic-heavy sites. It also offers advanced configuration options for those who wish to fine-tune their settings. However, users have noted several drawbacks, such as issues with cache preloading and compatibility problems with other plugins or themes. Some have experienced difficulty uninstalling the plugin, reporting that it leaves residual files that can cause site issues. Additionally, there is occasional criticism of the plugin lacking certain features like automatic cache preloading and object caching.