Another board I frequent allows for posts with no message, i.e., a post with subject line only and nothing in the body of the post. This is signalled to the masses by having [NM] in the subject line supplied by the board software if no text is included in the body of the post. I have already tried this on this board and it doesn't work but we can implement it ourselves by putting [NM] in the subject line and putting some trivial text in the body.