I voted the article up not because of its subject matter, but rather for the thorough way in which he analyzed and presented it. It was a notable amount of effort to collect the data, and it takes some skill to put it together in a way which one can derive meaning from.

He then proceeds to do exactly that, and give us all a good tactic for increasing our karma: Post Consistently Interesting Stuff over a Long Time. Sure, we all read that and think, "_duh_, of course that's how to get it", but it's nice to see that there's data backing it.