Re: Site wide stats?
function here_are_my_stats() {
?>
// Put your statcounter/google analytics/whatever javascript code here
<?php
}
add_action( 'wp_footer', 'here_are_my_stats', 999 );
Put it in a PHP file and drop into mu-plugins.
If you use Google Analytics, you can filter by subdomains: http://www.google.com/support/googleanalytics/bin/answer.py?hl=en&answer=55524