So it's about some time ago, the new levels where introduced. It's a common behaviour that people posted much more answers before they became Saint in the old level system, than they did after Sainthood. Of course that is related to our beloved/behated XP game. Now, most of us are no saints anymore (though we're still listed in Saints in our Book).
Did the fact you're no saint anymore affect your posting frequency? Are you back in the XP game?