Hey guys!
I'm bored so I am making a simple service that I take your MW2 clantag and mod it! I can change it to anything you want that is 4 or below characters.
here is a few suggestions.
UNBOUND CLANTAGS:
Anything that has {} in it (both required)
such as: {69}, {hi}, {<3}, {7}, {IW}, etc.

CUSSWORDS:
Cun t
Fuc k
Coc k
Shi t
Dic k
***-(s)
etc

BASIC UNALLOWED CLANTAGS:
Nazi
Fish
IW
etc.

I too have a modded clantag ( {11} ).

How I mod it: I mod it with a HeX Editor and a Hash Calculator (Like the tool hash and resign on modio) and basically yeah...

Want proof?:
Add me on XBL "Neon Thongs" and go on MW2 and I'll show you mine
NOT ENOUGH? Okay, np. I will sign out (place profile back on USB) and change my CLANTAg to ANYTHING you want me to.

What you do:
Move your profile (this weekend is silver/free members get on XBL for free weekend) that you want to have your account modded onto your USB, plug it into your computer, get the profile off of modio, USBXTAF, XPort 360, or whatever you use and extract your profile to your desktop and upload it to mediafire, megaupload, hotfile, multiupload, rapidshare, zshare, filedude, fileape, etc. and send download link to me in a PM and I'll mod it for you.