I knew about ARPANET, Usenet and stuff, but wasn't that stuff used for research / military usage only? I thought it was with the popularization of the internet that those networks started to be used outside that range, hence why I'm surprised about that hockey necropost.
I have seen logs from usenet discussion, for example those in which Torvalds announces he wrote a basic OS for Intel 386 processors (Which later became Linux), but those are usually programming or research oriented.