Also, their community is very elitist. You won't get access unless someone invites you, or you connect to their IRC, give them your GitHub and grovel for a week in their channel.
Yeah it's definitely an HN clone, and that's much-needed because the orange site is a hellhole. I like their invite-tree system, and need to finish tracking down an invite.
I'm on it and have been for some years. Not a large contributor by any means, but I find it interesting enough to fairly consistently read. It's a community that's definitely got some quirks, but it has managed to stay broadly technical and not become a swamp of memes and snappy comebacks, which is sadly impressive these days.