The Comment plugin allows users to comment on site content, set
commenting defaults and permissions, and moderate comments.
Each content type can have its own default comment settings configured
as: Open to allow new comments and show existing ones, Closed to
prevent new comments and do not show existing ones, or Read only to
show existing comments but prevent new ones. These defaults will apply
to all new content created (changes to the settings on existing content
must be done manually). Other comment settings can also be customized
per content type, and can be overridden for any given item of content.
All comments are placed in the Unapproved comments queue, until a user
who has the proper permissions will publishes them, mark them as spam,
move them to trash bin or just deletes them.