speaking of which, I wonder how FPN is administered. Do they have strict moderators? I have to imagine that every site, even one as gentlemanly as FPN, must gets its share of hairy bridge-dwelling visitors from time to time. But you're right, I too have not seen trolls at FPN. I wonder how they managed that.
Just a guess, but, I think it's because of the nature of the pen world. In the keyboard world, eventually, you kind of run out of keyboard to try. Sure, the form factor may be different, but the underlying switches remain the same most of the time: ALPS, Cherry, Buckling Spring, Capacitive and Rubber Domes. In some rare cases, you can have say a fake Cherry or a NEC switch for example.
So, when most of the members have experience these switches, they probably start to look at the posts from a different perspective. In a way, members move from No Knowledge>Some knowledge>Contribute>"Bored"
In the pen world, it seems that the sky is the limit when it comes to pen. Morever, there are so many subforums each for a specific topic. There's always a new ink or a new paper to try. I started in the review subforums, sometimes in the repair subforum. Now, I spent most of my time there on the penmanship subforum.
I feel that some of the members on the FPN are viewed as experts, whose experience commands respect. In the penmanship subforum, Caliken is such a member. And because everyone sticks to the topic (easier to do on such forums), things generally don't get out of hands.