Index of /andrejciho/Wordpress MU/Username not the same as blog address

When you create a new blog in WordPress MU (mutli-user), it asks you for blog address, blog title, and admin email. When you submit the form, along with a new blog being created, also a new user is created with matching username (username = blog address). Not everybody likes it that way and with the following 5 minute modification, you can create blogs where the username is not the same as the blog address.

First, add a username field to the form where you create blogs.
(./wp-admin/wpmu-blogs.php)

Right above this line: (in my file it's line 567):

<tr><th scope='row'><?php _e('Blog Title') ?></th><td><input name="blog[title]" type="text" title="<?php _e('Title') ?>" /></td></tr>

insert this line:

<tr><th scope='row'><?php _e('Username') ?></th><td><input name="blog[username]" type="text" title="<?php _e('Username') ?>" /></td></tr>

Then to receive/process the variable after you submit the
form, edit the file that processes the form.
(./wp-admin/wpmu-edit.php)

In the case 'addblog', right below this line:

$blog = $_POST['blog'];

Insert this line:

$username = wp_specialchars($blog['username'] );
Then change the line that says

$user_id = wpmu_create_user($domain, $password, $email );

to this:

$user_id = wpmu_create_user( $username, $password, $email );

That's it!