Har har har, guys...no it's not metric, and no it's not the Fibonacci sequence to figure out your post stats. The explanation is simple, though I didn't intend for this to happen:
I upgraded the forum software the other day, and at the same time ran an auto-prune & synchronization of the board. "Auto-prune" gets rid of old posts and threads that have not been viewed for a long time. When that's run, it deletes the threads & posts. The "synchronization" then went and recounted all the threads & posts and updated all the forum statistics, including everyone's post count. I didn't realize that upon doing this, it would change everyone's post count (and, in turn, their ranking in the forums).
I apologize for the confusion and for "demoting" some users. I guess you'll just have to work your way back up to the upper echelon of the forums again, johnhens.
In the future, I won't resync the stats so this doesn't occur again (auto-prune will stay on to avoid the the database from getting too large and unwieldy though).