Here is a artical about gamer score cheaters.

[zzzpiggyzzz]

Video game cheating comes in many forms, the most notorious of which involves people who use dirty tricks to make themselves more effective (or invincible) in multiplayer combat games. The solution for people caught engaging in this form of cheating has long been permanent cancellation of the account and a lifetime of shame... at least until he or she gets a new account, that is.
But with the rise of Gamerscore and Achievements on Xbox Live, a new form of cheating has become popular: people who manipulate their save files and account information to artificially boost their Gamerscore by unlocking Achievements they didn't actually earn. Of course, neither Gamerscore nor Achievement unlocking will help you actually play a game better—both serve as mere bragging rights... and so they have become something that cheaters have begun to manipulate relentlessly.
Better watch out, says Xbox Live's Major Nelson, the well-known public face of Microsoft when it comes to all things Xbox. Starting today, Xbox is punishing Gamerscore cheaters with some pretty heavy penalties. If you've used a cheat on your account, better check it out to see if you've been affected. How will you know?
Well, your Gamerscore will be reset to zero. You won't be able to regain any Achievement you previously unlocked (legitimately or otherwise), though you will be able to gain new Achievements. And your account will be permanently labeled as a cheater account (see blurry pic above for an example). At least you still get to keep your account.
There you have it. It's like your mom always told you: Cheaters never win, and... well, you know the rest.
LINK: Gamerscore Correction

[Wobbly Goblin]

HaHaHa...that's funny!

I just looked through my friends list, but no one has been caught...yet.

[Wobbly Goblin]

I found this here --> http://www.xbox.com/en-US/support/sy...recheating.htm

About Gamerscore corrections

A gamerscore correction occurs on a player’s LIVE account when they gain achievements through avoiding game play and the use of external tools. LIVE is committed to keeping the service free of this type of behavior as it violates the LIVE Terms of Use. When abnormal achievement or gamerscore activity is found, LIVE modifies the gamerscore of players who meet specific and automated criteria.
A LIVE player who obtained their gamerscore in this abnormal way will

• Find their gamerscore reset to zero, and
• Be unable to regain all previously earned achievements, and
• Be labeled as a “cheater” for the community to view.

While players who have been identified by these criteria will start from a zero gamerscore, they will still be able to gain achievements for future games. In other words, we give them another chance to earn future achievements by earning them as other “fair” players do. The original gamerscore correction will remain permanent without any way to appeal.

Questions and answers

Under what circumstances does LIVE correct a specific gamerscore?
Specific and automated criteria are used to determine if a player has earned achievements by using tools that circumvent the game or avoid game play entirely. A player who meets these criteria has their gamerscore corrected.

How does LIVE know a player has been cheating on their gamerscore versus another player?
We look for abnormal achievement and gamerscore activity using criteria that identifies users who have used external means to earn achievements without really playing the game. Users who play games legitimately to earn an achievements are unaffected by this.

Does being a “cheater” change a player’s experience on LIVE?
We only correct the player’s current gamerscore and label them as a “cheater.” This label can be observed on Xbox.com, and through the player’s view of their gamercard on a console or PC connected to LIVE. They are still allowed to legitimately gain future achievements and the player’s experience doesn’t change in any other way.

I think I know someone who has been “cheating” – why haven’t you corrected their gamerscore?
For gamerscore corrections, cheating is when you gain achievements through avoiding game play and the use of external tools. If a player hasn’t met specific criteria then we don’t correct their gamerscore. If your definition of cheating is different, then gamerscore correction isn’t the answer – you should consider reporting the user through the feedback reporting system. It is also possible that the player is not cheating at all.

I’ve had my gamerscore corrected, is there any way to appeal the decision?
There is no way to appeal a gamerscore correction. We only correct gamerscores for players who meet the criteria 100%. Your best choice is to show the community you won’t do it again.

But it was my little brother/roommate/guest that did this using my gamertag. Can I appeal?
No. As is outlined in the Terms of Use you are responsible for all activity on your account.

I’m worried I might get my gamerscore corrected. What should I do?
Like the vast majority of Xbox LIVE members, if you earn achievements by playing through games like any other player, then you have nothing to worry about. Gamerscore correction only applies to players who use external means or avoid game play to earn achievements.

I’ve heard of other players getting banned. Why don’t you just ban these gamertags?
We believe in players reforming themselves, which is why gamerscore correction only applies to previously earned achievements. This allows these players to earn achievements like other “fair” players without having to get banned from LIVE. However, any user who violates the LIVE Terms of Use is subject to having their gamertag banned.

[Wobbly Goblin]

Apparently this guy "StripClubDJ" was the first person to reach 100,000 achievement points over xbox live. Unfortunately according to his tag he was caught cheating.