I am not asking how you use it. I am asking what you believe is the reason the site operator is running it.
Why do I take in parcels for my neighbour if a courier knocks on my door? She doesn’t pay me. It wouldn’t cause me any harm if I didn’t. But it makes the place nicer to live, and I’ve become friends with her as a result.
She invited me to dinner recently and fed me delicious food, and we drank very good champagne. That was an unexpected bonus.
“To promote ycombinator” only works if there’s an audience worth promoting to. Building something great that brings people back day after day maybe has the result that it can also serve as a promotional tool - but that’s a bonus, not necessarily a purpose.
I’m not the person you asked the question of - but I think the purpose of ycombinator is to give relevant people a place to discuss things aligned with the ecosystem in which ycombinator operates, to help strengthen and champion that ecosystem. Does it have a payoff for ycombinator? Almost certainly. Was it created with that explicit purpose in mind? I doubt it. There are easier ways to make money.
They're not promoting startups to investors via HN, it's a different kind of promotion. But 'pool of eligible hires' is quite worth a few salaries to maintain, even if others get value from it.
If we take what he wrote at face value, I don’t think the purpose was primarily its promotional value.
https://paulgraham.com/hackernews.html
_ Hacker News was two years old last week. Initially it was supposed to be a side project—an application to sharpen Arc on, and a place for current and future Y Combinator founders to exchange news._
_ Hacker News is an experiment, and an experiment in a very young field. Sites of this type are only a few years old. Internet conversation generally is only a few decades old. So we've probably only discovered a fraction of what we eventually will._
_ Hacker News is definitely useful. I've learned a lot from things I've read on HN. I've written several essays that began as comments there. So I wouldn't want the site to go away. But I would like to be sure it's not a net drag on productivity. What a disaster that would be, to attract thousands of smart people to a site that caused them to waste lots of time._