Ever had the need to redirect your users to a certain page after they perform a particular task (ie: after they are invited to register to the site)?

Doing it is simple:

just translate the link in your PHPTemplate content-type file (es: node.tpl.php) from:
http://www.mywebsite.com/user/register

to:
http://www.mywebsite.com/user/register?destination=/node/<?php print $nid; ?>

and the visitor will be redirected to the node from where he was asked to register. Kust tweak the link and the redirection target page to suit your needs ;)