As an aside, I’m very impressed by the comments widget that uses Github issues. I think I might adopt it for my blog. I never cared much for comment sections, but my blog is a Github repository anyways, so I might as well use it. Thanks!
It's almost perfect except for one almost deal breaker thing (which applies to both Giscus and utterance.es): to comment you have to click through a very scary permissions dialog that claims it can "Act on your behalf" in your Github account, without any qualification. I'm pretty sure the permissions dialog is misleading, but it sucks. I expect that it really cuts down on the number of people willing to leave a comment. And I doubt it will be fixed because Github probably doesn't really care to support this use of their API.
Since it’s powered by GitHub discussions, and the discussion itself needs to be public, anyone wanting to comment but not wanting to authorise Giscus to act on their behalf could go to the discussion on GitHub and leave the comment there directly I assume
What should the "act on your behalf" mean? Is it safe to provide my readers Giscus?