I *think* this is what they mean

New Comer - 1-9 posts
Resident - 10-100 posts
Citizen - 101-1000 posts
Pillar - 1001- + posts

It's like saying PT is a community. Karen has Mayor undr hers. Those who don't post much are either just residents of the community or citizens. Pillars are the ones who help keep it together.

That's how I see it anways