function ls_get_refer() {
    // Break out quickly so we don't waste CPU cycles on non referrals
    if (!isset($_SERVER['HTTP_REFERER']) || ($_SERVER['HTTP_REFERER'] == '')) return false;

    $referer_info = parse_url($_SERVER['HTTP_REFERER']);
    $referer = $referer_info['host'];
	$path = $referer_info['path'];
	// Google Reader Hack !!!
	if(($referer == 'www.google.com') && (substr($path, 1, 6) == 'reader'))	return false;
    // Remove www. if it exists
    if(substr($referer, 0, 4) == 'www.')
        $referer = substr($referer, 4);
    return $referer;
}