Does anyone know if there is a tool or platform that makes it easy to make/publish this type of "leave footnotes on an article"? The UX here is nice and simple, and I think there is utility in sharing feedback this way (vs. blockquotes in email, or Google Docs comments, etc).
I too would like to know. I mailed the author and if they respond I will let you know as well.
https://github.com/molly/website-v2/blob/master/src/pug/page... https://github.com/molly/website-v2/blob/master/src/sass/rev... https://github.com/molly/website-v2/blob/master/src/js/revie...
It's all open-source, so by all means feel free to reuse it if you like!