I know some people dislike post restrictions and I would honestly say that they should probably not play this one as it'll be one of the major mechanics of the game. The goal is to make a fun game, though, even with the post restrictions.
The post restrictions will be flying around not just from scum, but also from the Compulsive Towny so there's at least one other guaranteed way that post restrictions could hit scum or town. Scum can also use it on themselves if they want, which can be used to make themselves look towny. I've already thought of a few ways that Cursed people can get around it in a limited way, but none of them break the restriction. I will make sure I explain it in a way that can't be misunderstood, though. I do want to make the restriction in such a way that it helps scum, not hinders them. I will consider that carefully when I am phrasing it.