Things You'll Need
Instructions
Add the Gamertag to Xbox Live
Turn on your Xbox console with no disc in the tray and log into Xbox Live.
Go to the dashboard and click on "Friends."
Click "Add Friend" and enter the gamertag. You will be notified the next time your friend signs on.
Join a Social Networking Site
One site in particular is called Gamertag and is the first ever Xbox Live community. Click "Join Us" on the upper right hand side of the screen.
Enter your gamertag and user information then click "Submit."
Click "Browse" on the top toolbar and then enter a friend's gamertag into the search bar. This will bring up a list of results associated with the gamertag.
Download the Gamertags Facebook Application
Log into Facebook or click "Sign Up" if you do not have an account.
Type "Gamertags" into the search bar. Select "View Application" next to the Gamertags profile.
Click "Go to Application" and then "Allow" to download. Click the "Gamerwall" to view forums and discussions where people post their gamertag.
Bungie People Finder for Halo
Go to the Bungie People Finder. Bungie is a software developer responsible for the Halo franchise.
Type the gamertag into the search bar and select Halo 2, Halo 3, Halo 2 Clans, or Bungie profile.
Click "Search" to bring up a list of results.