Ok, I am not paying for reading the news feed on HackerNews. I suppose you aren't paying either. Are both of us HackerNews' products?
Yes. We the users of HN are product - both individually, and also as a market segment, and also as a smart[0] crowd.
From [1],
Y Combinator provides seed funding for startups.
To Y Combinator, the HN is both entry to the sales (investment) funnel, and a PR machine. And also early opinion & commentary, early beta-testing, load testing [2], and more.That is not to detract from the (very probable) angle of pg & team wishing to render a public service for the public good :-)
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[0] the occasional bad thread notwithstanding ;-)
[1] https://www.ycombinator.com/about/#whatwedo
[2] aka HN hug of death
At least the product supporter ;)