Users appreciate the G Meta Keywords plugin for its simplicity and effectiveness in adding meta keywords, a feature that many SEO plugins lack or provide only in paid versions. It is particularly helpful for users who want more control over SEO by enabling the addition of keywords on a per-page basis. The plugin is cherished for filling the gap left by other popular SEO tools like Yoast SEO, which no longer support meta keywords. However, users have noted a need for updates to ensure compatibility with newer versions of WordPress and have requested additional features like custom taxonomy support.