Indeed. There is missing representation in conversations here that make those absences conspicuous. You can see a similar effect on, for example, a company Slack channel, and figure out which groups of employees are having the same conversation on a private channel. Nothing wrong with it unless the members of the side group are obliged to participate in general conversation, and they aren’t here.

YC founders haven't "fled" to Bookface (let alone "many years ago") and it's not at all accurate to describe BF as "internal Hacker News".

https://news.ycombinator.com/item?id=22389362

I had a reply lined up for you, but I don't want to risk my account yet again.

Nobody who has ever laid eyes on Bookface could possibly believe that it's a replacement for HN. It's a very different scene, more like Craigslist than Reddit. It would be weird to "hang out" there. Nobody has "fled" HN to Bookface.

That’s sad, I wish they were still active here.

We are. Most threads have at least one. I find the longer they have been out of yc the less they are here though

Last I checked, the rate of participation of YC alumni on HN had been stable for many years. It was a couple years ago that I ran the numbers, but I doubt that it has changed much since then.

So by bookface you mean a facebook group

I really want to say "yes" and see where the conversation leads.

No, I meant Bookface, YC's internal clone of Hacker News.

I assume facebook will sue for trademark infringement them if they use that name in public

Does Dang moderate Bookface as well?