Commenting on a blog post shows that people are reading it. However, the spammers try to pass fake comments in order to promote their links. To save your website from spam comments to install a spam free WordPress plugins is a best solution. The under given 3 WordPress plugins will lessen spam comments on your blog post and make your work easier to manage your website commenting system.
Akismet checks your comments according to the rules and policies of Akismet web service and check the comments spam or not. Akismet is able to check each and every comment pass on your website by site visitors. If the comments look like spam it will not published and give you chance to review it then allow to publish under your blog post.
Disqus Comment System
Disqus is a spam free WordPress website with easy comment system help you to replaces your WordPress built-in comment system with the advanced and spam free comment box powered by Disqus. It help your visitors to make easy comments and stop spammers to add fake comments on your blog posts.
Captcha is one of the best WordPress plugins to save your website from spam comments. This plugin allows the users to add security captcha form into web forms. It will protect your website from spam and math logic comments easy to understand by human being.