Question about the Leaderboard

As a general rule, I don't look at it. Basically don't care. 

But I looked today, and noticed something I was curious about...

None of the leaders were members prior to 2007. I know I joined in 2004, not 2008. And some of those guys were definitely here before me. 

So, what happened?  Did a former software upgrade dump some history?

Also curious why John Brown (or Quasi Mofo) is no longer in the top postings. Were his posts dumped from the count?  There's no way any of us overtook him. 

Yep I think it was two new boards ago. Everyone lost there post count at that time. I was on prior to 08 as well. Swank overtook John/Mofo a couple years ago. I'm not sure why he's not listed though.