TL;DR
Utterances is a lightweight commenting platform built on GitHub issues. So you have to have a GitHub account, but I expect most people who comment on this blog already have one.
Why Utterances
When I switched to blogdown, I lost my disqus comments. I had considered migrating them over, but never got around to it. I also thought that there had to be a way to link GitHub issues to blog posts, but didn’t investigate it much.
Then, I came across Maëlle’s blog post about switching to utterances and I was sold. I had some free time last night, and dived into how to add it to my site that uses the hugo academic theme.
I’m not expecting a lot of heavy commenting, but at least it’s now available!