Info:
It's not script, it's custom error pages.
When visitor come to your site and search for something that not valid, he gets error pages, every visitor each visit get at least 1 error page, now you can earn from these pages, really good money maker.
Only need to edit 1 PHP file with your advertisements code.

Revenue Sources (For the owner)
You have multiple revenue sources: Adsense, Adbrite, ClickSor, CPALead, etc.

Requirements
-PHP5
-.htaccess support

Price
Unlimited Domains Uses - 6.99$

Payment
Paypal

Demo
http://www.hidecomp.info/123

Have any questions?
Feel free to message me, or ask a question in this thread.

Want to buy?
Message me for payment details.

Regards.