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.

Scott Smith

Add a simple, modern tool to your posts to allow your readership to reply to any post via Twitter or App.net with a simple click or tap. An @mention is composed to your account with the permalink of the post that is being replied to attached.
Now the conversation with your readers continues using your favorite Twitter or App.net app. Download the Decode Reply Tool today and take a look at the beautiful and modern theme, <a href="https://wordpress.org/themes/decode" rel="ugc">Decode</a>.

Decode Reply Tool

This plugin allows your readership to reply to your posts via Twitter and App.net using a beautiful, simple reply tool.

Comment Reply Notification vs Decode Reply Tool