The .tk domain for my Pax Neo-TeX doesn't forward URL paths -- zompower.tk forwards to fzort.org/bi/neo-tech/, but zompower.tk/vote.php won't forward to fzort.org/bi/neo-tech/vote.php. To work around this, I added some PHP at the top of the index page to redirect to the appropriate page if the referrer contains a path to some other page:

<?
$refr = $_SERVER['HTTP_REFERER'];
if (isset($refr)) {
        $refrp = parse_url($refr);
        $rhost = $refrp['host'];
        $rpath = $refrp['path'];
        if (($rhost === 'zompower.tk' ||
             $rhost === 'www.zompower.tk') &&
             $rpath !== '' && $rpath !== '/' && $rpath !== '/index.php') {
                $rfrag = $refrp['fragment'];
                $rqy = $refrp['query'];
                if (isset($rfrag) && $rfrag !== '')
                        $rfrag = '#' . $rfrag;
                else if (isset($rqy) && $rqy !== '')
                        $rfrag = '#' . $rqy;
                header("Location: http://fzort.org/bi/neo-tech" .
                    $rpath . $rfrag);
        }
}
?>

The code also converts query strings (e.g. ?foo) into anchors (e.g. #foo).

This trick may be useful with other forwarding services and web sites as well...