When I receive a private message and reply I am uncertain if there is a correct position for my reply? Do you reply at the bottom of the PM received, or do you post your reply at the top of the PM received. It probably doesn't make much difference, but I've never known if there is a correct way? I used to reply at the bottom but would get a reply then at the top. It was confusing with my replies at the bottom, the other person's at the top.
So....what's your preference....are you a topper, or a bottomer?