Most WordPress webmasters are very familiar with the idea of spambots. These annoying programs post spam links and content to WordPress websites and can overwhelm the ones that do not have proper protection in place. NoSpamNX is a cool WordPress plugin that helps you fight automated spam on your website. It adds invisible forms to your website to bust automated bots.
NoSpamNX is simple to install and adds another layer of protection to your website. Nice to have if you are struggling to get a handle on spam comments on your website.