WordPress MU

I was looking for a way to disable blog registrations and enable user registrations, and couldn't find anything in the options that would allow for it. (No need to point out that i could use plain old WP i have my reasons.)

Anyhow, I came up with the following code for a plugin. Please critique and let me know if you see any potential for abuse. Its not fancy, but appears to do the job.

function kill_blog_signup(){
if( FALSE !== strpos($GLOBALS['PHP_SELF'], 'wp-signup.php') ){
		if($_REQUEST['signup_for'] == 'blog'){
			$home = get_bloginfo('home');
			header("Location: $home");
			die();
		}
	}
}

add_action( 'init', 'kill_blog_signup' );

Sure would be much easier to just comment out the blog option, and force the username option to be selected in wp-signup.php.

agreed, but i am trying to avoid core file edits if at all possible. I also don't intend to show the first part of wp-signup, i would be posting to it from somewhere else.

If you really get heavy into MU, core edits are unavoidable.

As long as you keep track of what you edit, and where, it isn't a big deal.