FBN & his less obnoxious cousin BNEA320, fall into one of three categories,:
bull****ters, deliberate agents of misdirection & disinformation or just plain mental illness.
The really interesting observation is their lack of emotional response to criticism
of them on these boards. They just ignore pages of criticism
about them. Very few emotionally engaged individuals can sit back an ignore multiple posts pillorying them without a hint of anger. This leads to the conclusion that their "heart" really isn't in it, they are emotionally disconnected from the deliberate controversy they seek to stir up. This is the "tell": They don't genuinely believe what they are writing.
There are some excellent references for the first two of these categories.
On Bull**** by Harry Frankfurt, which builds on an earlier essay
The Prevalence of Humbug by Max Black.
Disinfo / Agitprop agents:
The Gentleman's Guide To Forum Spies.
The disinfo reference will also give a guide on how to spot and "Angel" on the board, and general techniques to manipulate forums.