Update your content regularly so there’s always something new. Share anything - stories, ideas, pictures & more. It’s a great way to hook your forum members and keep them coming back.
One easy way to freshen up your content is by contributing new posts and comments to one of your existing discussions. This will keep the conversation going for longer and your existing members engaged in discussions which they’re already passionate about. Another way to add fresh content is to add additional discussion categories to your forum through time so there’s always something new for your community members to discuss.
Every system requires the users because all the system is control by a person or a user because system are dumb machines. I figure that grademiners review promote the motivation in the user so fulfil the person requirements.