Comments in WordPress
In WordPress you have the option your viewers to leave comments on your site. This feature creates a dynamic interchange between you and the viewer.

You can moderate your visitors' comments. This is done from the Manage menu, Comments section.

You have a number of options that you can set for your Comments. They are listed under Options menu, Discussion sub-menu.

This is the place where the site administrator decides if comments are allowed, if pingbacks and trackbacks are acceptable, and what constitutes Comment Spam. On this SubPanel you also control the circumstances under which your blog sends you e-mail notification of certain events at your site.
Please, make sure you pressed the Update options button once you are ready with your changes.