As someone that doesn't always post much I'd like to weigh in on this. I'm not trying to make anyone mad, nor am I mad at anyone or taking this thread to heart. But it's just some things to consider.
First, in the beginning of a game for some reason I have a hard time finding things to say. I can't look at 5 posts from someone and say they are scum or town. I need more to be able to get a read. But some people don't like it if you have a null read on everyone. I really do understand that, but if I really don't know whether they feel scummy or townish, how am I supposed to say anything other than null?
Sometimes some people are posting so much it makes it hard to post. And if the person posting gets mad because they don't think someone else is posting enough, that really turns me off. I play these games to have fun. When people start complaining then the game becomes a chore. It also bothers me when people stalk you and say "they are posting in that forum but not here" type statements. I have had people do that to me and again, it makes me not want to post. If a mod wants to have a posting restriction and say you have to post three times a day put it up front before the game starts and I won't sign up for that game. I won't be offended or feel that I'm being excluded. I try to post content related posts every 24 hours at least. Does it always happen? No.
Sometimes I have posted something that I do feel is content related and had other people call it fluff. Yes, I have definitely posted fluff stuff before and it usually has a smilie of some kind in it because that's how I tend to try and show that I am joking about something. And knowing that everyone posts fluff at some point it's annoying to hear that someone thinks that everything you've posted is fluff. It is another reason that I don't post much. I don't want to be accused of posting fluff.
It's really kind of funny, but I tend to be the opposite of most people on the internet. I am rather shy about posting on the 'net and am pretty outgoing IRL. It really frustrates me because IRL I can talk your ear off. When I sit down in front of the keyboard to post in a game, my gift of gab goes out the window.
Anyway, I just wanted to throw that out there as something to consider.