It's quite likely that the stuff in the cupboard doesn't count towards your post total, which is one reason why the count would fall. Between us we've already moved 187 threads in there, 1444 total posts. If you've commented on a bunch of pre-pubescent stories, then sorry, that'll eventually go into the bit-bucket in another (23 days?) if the author doesn't update the story to match the rules. Most of the stuff in the cupboard is people that have deleted their accounts, or haven't logged in for years, so we likely will just delete the lot wholesale when the limit expires.