From a comment on an HN article about the causes of the decine of UseNet:

"These days we're used to being overrun by everyone who can use a point-and-drool interface on their phone to look at Facebook, but back in September 1992 it was a real shock to the system when usenet was suddenly gatewayed onto AOL, I can tell you. Previously usenet more or less got along because the users were university staff and students (who could be held accountable to some extent) and computer industry folks. Thereafter, well, a lot of the worse aspects of 4chan and Reddit were pioneered on usenet. (Want to know why folks hero-worshipped Larry Wall before he wrote Perl? Because he wrote this thing called rn(1). Which had killfiles.) "