I strongly agree!

alphaXiv (https://alphaxiv.org/) is a discussion layer on top of arXiv, and it's starting to gain a lot of traction.

You can replace the arXiv URL with "alphaXiv" to get to the discussion: https://arxiv.org/abs/2404.16710 → https://alphaxiv.org/abs/2404.16710

Disclaimer: I'm currently helping out with alphaXiv -- it's a fun project out of Stanford

Openreview is nice. I guess it could integrate with arxiv to allow preprints but someone needs to pay for moderation if we are to keep a high standard of comments.

That’s a great idea. In a way, HN is that for many papers in topics that the HN community resonates with

Are there other communities that also post scientific papers and comment publicly? Even if the community isn’t exclusively about science?