Checks status of current blog.
Checks if the blog is deleted, inactive, archived, or spammed.
Dies with a default message if the blog does not pass the check.
To change the default message when a blog does not pass the check, use the wp-content/blog-deleted.php, blog-inactive.php and blog-suspended.php drop-ins.
true | string
Returns true on success, or drop-in file to include.