One of the best ways to interact with your visitors is to allow them to leave comments on your site, and because WordPress was developed as blogging software, it has an extensive comments system. This lesson shows you how WordPress handles comments and the ways you can manage them.
WordPress offers two ways of deciding whether visitors can leave comments: on a sitewide basis and on a per-content basis. Both of these are mentioned in earlier lessons on site administration (Lesson 5, “Basic Admin Settings”) and on creating Posts and Pages (Lesson 9, “Advanced Post Functions”), but it's worth repeating here.
If your site is more informational—not talking about issues, controversies, opinions, and so on—you probably want comments off by default, turning them on only when you need them.
The important point is that you need to consider the purpose of your website and how the WordPress comment function might fit in. Every site will be different, and every area on your site needs to be considered separately as well.