We employed this plugin on a site for well-wishers of a celebrity photographer http://www.johndominis.us, and it has been terrific. We intentionally set it to post without manual moderation and it has been filtering spam with remarkable accuracy in conjunction with Akismet. On two occasions when I wrote to the developer for support, it was provided quickly and professionally. This is the first time I've been motivated to write a review of a plugin. Kudos.