Redirecting spoofed URLS: /?spoof

Today I stumbled across an (old, but interesting) blog post:
<snip>
Which sparked my interest, as well as this: [webmasterworld.com...]

I am wondering if the posted fix for _GET will hurt me rather than help? My site is entirely database driven.

My URLs are currently rewritten to .html
But there are a few pages I cannot figure out how to rewrite, so they're like:
/some_page.html?page=1

Basically, when Yahoo hits /?test or some strange individual visits /?MSOFFICE=somebigstring
it outputs a 200/ok response.

[edited by: jdMorgan at 4:20 am (utc) on July 13, 2007]
[edit reason] No URLs, please. [/edit]