Hi guys Ive been using Steve Dawson's jump script http://www.stevedawson.com/article0006.php for a number of years but now I think its a bit out of date re SEO and php redirecting.

I find that my php urls are being included in the index when using the site command.

I've seen a method whereby a user clicks on a link ie. mysite.com/linktomerchant on their site

then is transported to a page like this with the code:

<html>

<head>
<meta name="robots" content="noindex,nofollow,noarchive" />
</head>
<body>

<noscript>
<p>You currently have javascript disabled - click the link below to continue</p>
<p><a href="http://www.affiliatetrackingcodegoeshere">Merchant1</a></p>
</noscript>

<script>window.location.href='http://www.affiliatetrackigncodegoeshere';</script>
<!--<script>alert('http://wwwaffiliatetrackingcodegoeshere');</script>-->

</body>

</html>

Each merchant has a page like this.

Can someone explain what this method of redirect/affiliate code masking is and does it get the 'green light re Google seo?

And is it the best one to use in 2010?

Thanks