Available Gamertags for use on XBOX LIVE. I will be revising this post periodically by adding new names and deleting claimed names so check back often.
Your current gamertag is stupid. Anyone that listens to you can tell by your squeaky voice that you are not a Assassin, Killer, Sniper, Hitman, or a Ninja, so remove any of those titles from your Gamertag. You are afraid to stomp on a spider, you wear Pokemon pajamas to sleep, yet you somehow still consider yourself a badass?
Anyone who has MONEY somewhere in their gamertag does not actually have any money. There is no exception to this rule. You are Broke as a Joke. Quit pretending you are some kind of Baller, Pimp, or Thug who earns their money on the streets. You are a broke ass who begs his mom to buy you Microsoft Points, and to get you a Happy Meal at McDonalds.
You are not fooling anyone by using Lethal, Deadly, or Fatal in your Gamertag. The closest you have ever been to being Lethal, Deadly, or Fatal is when you eat too many burritos in a greasy Mexican restaurant which causes you to butt burp (fart).
Try to be original. How many damn Spartans, or Master Chiefs are there in the XBOX community. If you do not know I will tell you. The answer is - too fucking many. Do no try to be clever by adding a few letters to the beginning and ending of your name. (Example - Xx Douchebag xX). This just makes you look Xx Stupid xX and very Xx Unoriginal xX.
These are some unique gamertag names that have not yet been claimed by anyone. I have tested all of these names and can confirm that they are available and able to be used on XBOX LIVE (As of 7/1/2011). Claim these while you can.
I will revise this list periodically, so be sure to check back for other Gamertags that may interest you. If you have any names you would like to suggest, or even a funny Gamertag that you have seen, please post it in the comments.