Threaded commenting in the admin for private discussion between writers and editors.
Editorial comments help you cut down on email overload and keep the conversation close to where it matters: your content. Threaded commenting in the admin, similar to what you find at the end of a blog post, allows writers and editors to privately leave feedback and discuss what needs to be changed before publication.
Anyone with access to view the story in progress will also have the ability to comment on it. If you have notifications enabled, those following the post will receive an email every time a comment is left.
Extend editorial comments
Using WordPress’ hooks and filters, you can extend editorial comments in the following ways:
ef_pre_insert_editorial_comment(filter) – Do something before the editorial comment is inserted into the database.
ef_post_insert_editorial_comment(action) – Do something after the editorial comment is inserted into the database.