I especially agree with your third point. Any kid getting his first Windows machine was now a computer expert and ran to the (then) only knowledgeable place to

I especially agree with your third point. Any kid getting his first Windows machine was now a computer expert and ran to the (then) only knowledgeable place to get more info, and that was usenet. That turned usenet into reddit without any controls at all. Reddit, at least, does some minimal clean up.