WordPress allows you to manage user roles through UVaCollab, including restricting your site to a private audience or otherwise managing viewing. WordPress also welcomes commenting, allowing conversations to develop between readers of each post. If you choose to utilize commenting, you will need to ensure compatibility with your theme, and take steps to prevent spam comments. Once in place, comments may be allowed / disallowed for specific posts and comments may be moderated on an individual basis through the back-end interface of WordPress. Note that you cannot do this through the WordPress interface.