You remember the Usenet, it was the Internet before WWW.
Before Gore gave public access to the masses it was frequented by bright people and the place you went for answers. It's still around; p0rn for those who don't wish to subscribe to a site or wish to pay for it, and rivals thepiratebay in the files available.
I've never frequented a sex site, there's been no need, and when someone has a disagreement with a sex site they normally post everything they purchased to the Usenet (many times I've seen this).
It's not as active as it used to be and the sites are being used for items not meant for it. Alt.binaries.astronomy has not one pix of a star, planet, or even the sky, it's become a movie repository.
Just saying there is no age check for the Usenet, no passwords and for me I can't access it with SSL so nothing that says it's me accessing it other than an IP address (with an open WiFi channel it could be anybody), and there are still some very active areas.
I do try to steer people to the Usenet as they just don't have a clue what's available, if not for files be it pix, videos, or utilities, for the support available in many established groups for just about any subject. I've spent years in a Usenet group just helping people out, while no subject was off limits almost all queries were computer related.
Yes, Google Groups has pretty well taken over (and archived) the Usenet text groups, yet most of the messages to those groups via Google Groups doesn't make it to the Usenet (greatly reduces the spam and the stupid) - and not a one of the binary groups do they have a hand in.