Pigeonholing the demographic of P&B would be nigh on impossible without years of studeous research and analysis. Just listing the Poster categories would be a tough ask....
VLs, perverts, Alcoholics, insomniacs, bigots, serial killers, Da's, puddle drinkers, psychopaths, sociopaths, narcissists, drug users (various scales of usage), pseudo intellectuals, Communists, Fascists, Socialists, Centrists, Conservatives, Nationalists......this list is non exhaustive!