I think I got an XBOX 360 around March of 2006. I found out about 360 Voice sometime later that year, probably around July (according to their Gamerscore hisotry graph). I was just looking, and found these interesting (to me) stats about my gamerscore:

At the end of 2006 I had earned 4,647.

At the end of 2007 I had earned 17,888 for a change of 13,241.

At the end of 2008 I had earned 35,511 for a change of 17,623.

I am currently on the virge of breaking 40,000. Now, while this might not be something I should be bragging about, I do enjoy this “meta-score” of my video gaming. I also enjoy comparing this to various other people on the interwebs.