Right now a user can remove a post they make, however it would be nice if they could close their own posts to comments also.
This would allow a poster to self moderate their post if it gets out of hand, if someone answered their post, or just to close it. It would also prevent someone from posting on a necro (old) post.
Also, it would be better if the post was archived instead of deleted. Then if the admin wanted to delete, they could.