Users should be allowed to delete posts and comments from the community. It is partially an issue that goes back to users' privacy. Allowing users to delete posts will allow users to remove duplicate and already addressed posts/issues, which will likely lead to a more straight forward clean and net community. It could allow users that post inappropriate material to do more self-edit and remove possible offensive material. It could also encourage users to post more and be more active knowing that there was such an option to delete their posts.