Re: The Hazard of using 'printer friendly' functions on commercial sites

[xm <xm () while1 org>]

On Mon, 29 Apr 2002, Max Kennedy wrote:

> I first noticed www.worldnetdaily.com and www.drudgereport.com doing this
> to yahoo news.
>
> Both of these sites are high volume sites that make their money by linking to
> stories.  By adding '&printer=1"  to links, about 90% of yahoo's ads are
> removed.  This means that yahoo serves the stories, but doesn't get paid.

I'd be pretty easy to redirect to the original story with ads if the
referer is anything besides the original. Here's a perl thing that should
check for bad referers

if(($ENV{HTTP_REFERER} ne '')&&(!($ENV{HTTP_REFERER} =~ /^http:\/\/($host).*/)))

where $host is the domain of your site.

-- 
xm () while1 net           (http://while1.net/)