I am searching for a plugin that enable the Admin moderate the comments and be able not only to delete or publish a comment but also to remove it and replace it with a pre-define warning message or something like that. and publish that warning message for the bad comments that doesn't follow the publishing agreement policy.
like the guardian for example .. it did not delete the commenter name nor his avatar but it publish an instead message like the following message:
"This comment was removed by a moderator because it didn't abide by our community standards. Replies may also be deleted. For more detail see our FAQs."