Hmm, just because the leaderboard isn't bursting with points, doesn't make it pointless in general. Look at the activity in the HCM Mexico space, it's huge! The OPs are just as lazy as in most of the other spaces when it comes to closing their threads. So it's hard for the contributors to collect points for the leaderboard. ^^ And the Chinese Hana crowd are obviously serious bloggers. *g*
The numbers on the leaderboards are in my opinion not a good indicator of how pointless a space is. It's the activity that is - for me - the most important thing. And even then you have to look at the topic of the space to see, if the reason behind a low acitivy could just be that the topic is too specific to attract a lot of content. 