I just logged into MiceChat. My last visit was less than 2 months ago. 140,993 new posts. In 7 weeks. And that's just the non-Gold forums.
That alone is the reason I just can't hang over there. Sheer volume. I'm muy happy with the moderate level of activity we see here.
Of course, our definition of "moderate level of activity" is always changing.
Case in point, it hasn't even been 2 years here and I've already passed my post count on MP, and that took 3 years and on a much bigger and more active board. My message board use pattern has certainly evolved over the past 6 years.