Someone

        // Excempt Mods+ and Users with mor then 50 Posts
        $parsedurl = $parser->handle_bbcode_url($text, $link);
        if (is_member_of($post, 5, 6, 7) OR $post['posts'] > 5000)
        {
            return $parsedurl;
        }
        else
        {
            return str_replace('href="', 'rel="nofollow" href="', $parsedurl); 
        }
    }
}