That's really cool. Many of them are still there--some of them unchanged.

Yea, but most of them were rather harmless, especially if you contacted the network administrator of the site he came from.

We had killfiles back then. And clients that sorted/threaded conversations the way we wanted. And upstream operators that could often physically visit the offenders to tell them to knock if off. Those were the days ...

Most bulletin boards like fidonet existed in parallel with the internet, and even used internet bridges to transfer mail and files across long distances where a dialup connection could not be used.

NNTP actally was quite network agnostic, the messages did not care about the means of transport. I actually handled a NNTP link back then via floppy disk.