Vast HTML

This will allow you to display exacly how many comments total are on your blog.
For more information on the plugin visit: http://vasthtml.com/js/total-comments-plugin/

Total Comments

shows how many comments are on your Wordpress blog.

Mark Jaquith

Joen Asmussen

Subscribe to Comments is a robust plugin that enables commenters to sign up for e-mail notification of subsequent entries. The plugin includes a full-featured subscription manager that your commenters can use to unsubscribe to certain posts, block all notifications, or even change their notification e-mail address!

Subscribe to Comments

Subscribe to Comments allows commenters on an entry to subscribe to e-mail notifications for subsequent comments.

Total Comments vs Subscribe to Comments