GamertagSearch.com allows anyone to enter gamertags to see if they are available or to view that gamers avatar, gamerscore and latest games played online instead of through the xbox 360 dashboard.
Xbox Live Gamertag Search Engine
Xbox Gamertag Search / Xbox gamertag lookup
2024-06-06
If the gamertag entered is available it will notify them and they can purchase the gamertag when they get back on their xbox 360.