Pretty much just for reputation and a sense of self-accomplishment.
Keeping track of how much you completed your games, a total of all your achievments.
Yes it will
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
you need an data transfer cable
I don't think it does I earned 2000 gamerscore when my Internet was down then when I got xbox live back it stayed at 39000 gamerscore
You can earn achievements while not connected to XBOX Live and your console will keep track of your gamerscore locally. However, your gamerscore will not be reflected on xbox.com or on any other console until you connect to XBOX Live.
its called get the achievements yourself and cheating is for noobs
Boosting result in suspension from a game. But if you are boosting which improves your gamerscore you get a gamerscore reset and get labeled as a cheater.
Yes your gamerscore will be the exact same as it was before you made your live acount
gamerscore
No
To show off people.
You don't have a gamerscore but depending on the achievements you have you get trophy levels.