You are permitted and encouraged to reply to any user comments on news posts. For security purposes the comment setting for MOST news posts are set to "Approved only" to ward off spam bots from exploiting a news post. When replying to a comment, you MUST sign your name at the end of your reply. You are allowed to add your reply to a reply that another image moderator has made, but you MUST not delete or edit the other image moderator's reply (even if it's correcting a spelling error), and you must sign your name after your comment. This will keep straight who said what and what they said. Signing another image mod's name into your reply will result in serious consequences and possibly a loss of access to the account. A series of hyphens ----------------- can be added below an image mod's reply to separate your reply from the other mod's reply.
You're also allowed to engage a conversation within image mods within a comment's reply (like one mod replies to a comment, another mod edits the reply and comments on the first mod's reply, the first mod edits again and comments on the 2nd mod's reply and so on). Here is an example. [NOTE: the abuse post has that comment]