Forum Moderators: open
<META HTTP-EQUIV=Refresh CONTENT="0; URL=http://www.merchantwebsite.com?aff=mysite">
Just wanna make sure they know where the customer has come from!
meta redirects are somewhat unreliable.
I'd use a php redirect.
<?php header("location: http://www.example.com/index.php?myaffid-or-whatever"); exit; ?>