A couple of weeks back, an article [Facebook Wins Relatively Few Friends in Japan](http://www.nytimes.com/2011/01/10/technology/10facebook.html?pagewanted=all) made its rounds. As usual, Facebook is compared to the big three Japanese SNS: mixi, Gree, and Mobage-town. However, Gree and Mobage-town market themselves more as social gaming platforms, where the focus is the games themselves. On the oth