Hello, I believe you are looking for a simple one paged website where people can make posts . If i also understand correctly, you would like to be the sole moderator, where you would have the power to view posts before they are displayed on the page.
If i am not overstepping my boundaries, i would like to suggest a method where you would have the moderation rights to delete any post you deem offensive on your website after it has been posted and not before. Thank you.