You're not going to allow deleting posts? I think it's a must for any forum. There's only one forum I can think of that doesn't allow it and then you get posts that say delete this or something because people can't delete and they changed their minds about posting. Seriously it's not going to create any confuision, if anything it prevents confusion, because people might post something inappropriate or off topic and realize it right after their post shows up, and they can just go back and delete it.