*Free updates coming
Download WPMU DEV Multisite Privacy. These plugin's powerful options give users the ability to use their site as a private place to record their thoughts or to limit the site to their blog members only. If the site owner trusts his content with the network at large, he can elect to have it viewable to other community members. The “Admins Only” setting is also very useful if you want to create a test site on your network for experimenting with new themes or plugins. This plugin is developed by WPMU.