The 'downloads' section ( http://downloads.antionline.com/ ) has a 'search forums' box.
It leads to the following page:
http://downloads.antionline.com/search.php
The page cannot be displayed
The page you are looking for cannot be displayed because the page address is incorrect.
The other search box ( search downloads ) has an XSS bug.
If you input: "><h1>pwned</h1>, you will briefly see your string displayed on AO (afterwards you get redirected).

Cheerios