I've had humorous comments voted up here. IMO, the reason why is that they were actually funny in an original way, and perhaps not so blatantly, "ha ha" obvious to the casual observer as some of what passes for humor on reddit.

http://news.ycombinator.com/item?id=458155

For example. I've seen others upvoted too, but it's mostly only for genuinely funny stuff that's not some tired, bedraggled "meme". The other thing is that it's nice not to have too much of it - people "clowning around" just for the sake of attracting votes.

Color me illiterate, but I couldn't find where on Reddit they talk about the same stuff? The startup subreddit looks dead and the programming reddit is quite different. I'd love a link or name!

Here you go: http://www.reddit.com/r/Entrepreneur/

As for other stuff, the stories you see on HN still end up there. Try to submit one and it'll point you to the story if it's been submitted. And if it hasn't been, anyone can submit stories.