WordPress MU or WordPressµ is the multi-user version of the WordPress. It is an ideal who want to set up a large network of blogs.
WordPress MU is the underlying software that powers the blogging service. WordPress MU is also used by newspapers, magazines, blog networks, universities and large companies running corporate blogging systems behind firewalls.
Using the WordPress MU we will be able offer users an opportunity to sign up for a new blog. They will be able to securely manage their templates and settings without affecting any other users. We can have unlimited users with unlimited blogs and users can have various roles on each other’s blogs. One or more Site Administrators can perform site-wide management tasks, including adding users and blogs, altering permissions and granting access to themes.