Is this possible?

[Snowhog]

Yeah, looked at that. Won't do what I am looking for. If set (value greater than zero) it only prevents another post by the member if made with in x minutes. I want to be able to prevent follow-on posts by the OP regardless of when they attempt to make it; to force them to edit that post instead.

I see all to many threads that contain posts made only by the OP. I just want to prevent consecutive replies by an OP. It's perfectly fine if they are replying to another members post in response to their post, but I don't like them "replying" to their own posts. In my mind, that's just post count padding at worst, and lazy posting etiquette at best.