paul1999

This plugin allows you to specify a default text for the “quick reply” feature in WordPress 2.8+.
The template can contain the comment author’s fullname, first name, link to the original comment and any other characters, spaces, symbols etc.
<h3>Credits</h3>
Matt Wiebe for javascript code.
Kaspars for adding the comment ID tag.

Quick Reply Template Plugin

Allows you to specify a reply template for the quick reply feature in Wordpress 2.9+.

denishua

When a reply is made to a comment the user has left on the blog, an e-mail shall be sent to the user to notify him of the reply. This will allow the users to follow up the comment and expand the conversation if desired. 
Detail information: http://theme10.com/comment-reply-notification/
中文介绍： http://fairyfish.net/2008/11/03/comment-reply-notification/

Comment Reply Notification

When a reply is made to a comment the user has left on the blog, an e-mail shall be sent to the user to notify him of the reply.

Quick Reply Template Plugin vs Comment Reply Notification