I use Publii for managing this website, which is a pretty nice static site generator and content management system. However, it only has built-in support for Disqus as a comment system, which I am not too keen to use.
Adding a comment system has been in my backlog for a long time now, but finally did something about it. After looking at a couple of options, I went with FastComments. It is straightforward to add and has pricing plans I think are quite nice.
All posts should now have a comment section at the very bottom, so add comments and feedback. I would love to get discussions started!