halo 3 question!!!!!!

[®Big bo-bo®]

ok, i just noticed that next to my name in matchmaking that i have a gear symbol next to my name. what does it mean? how do you get it?

 

[corks1733]

It means that you got the medal linktactular.
you played in a party of all bungie.net users

 

[Zaku]

which side do u mean, the left or right?
The left side is ure emblem.
The right side means you've customized it and you have a
Bungie.net account. (That You've customized it from Bungie.net)