My first big discovery on the internet was joke sites. Hundreds or thousands of them. I'm still getting spam from that learning experience.

What I found was that a lot of the old standard jokes went from vaudevil and music halls, to radio, to TV, and now to the internet. I mean, I've HEARD some of the jokes in old movies about vaudeville. So it seems the millions of jokes on the internet came from the natural recycling that occurs when any new medium springs up. Or that's the conclusion I came to.