[cixin]

I think it possibly because they've created a few new accounts. New accounts on HN can only post so many comments before they start getting marked as [dead] automatically I guess this is to prevent spam.

To be honest, creating multiple new accounts to promote your startup is slightly spammy behavior. Even if they are owned by different employees of that startup.

[lyra_comms]

Hello! We didn't mean any of this to happen - one account got rate limited (who knows why) so we made another to answer questions, and then I think HN's spam detection opened its glowing red eyes and nuked that one as well.