[quote]7.9. What is it, anyway?[/quote]It tells you how much of a low–life nerd you are. The higher the number, the less likely it is you've socialized lately. (It shows how much you've played in the past two weeks, a rating of 10 means you've played over 38 hours) Mine's 2.7 right now and during the winter break it was 10.

It's based on how much time you've spent playing games in the last week, I think.