SideComments is a sleek commenting system by Eric Anderson that allows users to strategically leave comments on any paragraphs on the website. In a post that acts as a demo itself, Eric briefs how it works.
Try hovering over each of the section and you’ll notice a little “comment bubble” pop up. Clicking on the markers on the right will show the SideComments. Sections without any comments only show their marker on hover. Good luck!