Found the PG quote I mentioned:
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>> Here's a little known fact about the history of Y Combinator. The single biggest source of stress, for me at least, was not picking startups or advising them or Demo Day or even fighting with people on the startups' behalf. It was running HN.
>> Don't start a forum.
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Above was posted to Twitter Jul 11, 2020 — please see link below for additional context: