Digress.it
Digress.it lets you comment paragraph by paragraph in the margins of a text
Plugin Tag: discussion
WPLingo – Forum Plugin
Simple to configure and nice looking forum plugin.
Decode Reply Tool
This plugin allows your readership to reply to your posts via Twitter and App.net using…
bbPress Participants Trash
Allows participants to trash their replies & topics.
Dispito – discussions and comments
The Dispito comment system replaces your WordPress comment system with your comments hosted and powered…
Author Discussion
This plugin will create a page where authors, editors and administrators can communicate with their…
Readable Names
Asks commenters to write their names in the language that your blog uses.
The Final Word
Have the final word in a comment thread by marking a chosen comment as the…
Cordial
About
Override Comment Options
Enables per-post override of "Automatically close comments on posts older than" option in the WP…