I can't be certain, but I figure that the the averaging doesn't count posts prior to when that feature was initially added. Or maybe it does something like, you've been a member since x/x/xx, but since xxx days have past since your registration and only recent posts get counted, than you're going to have a very low average. I'd like some insight on that myself.
--Philip
Links 2.0 moderator
--Philip
Links 2.0 moderator