to just get a few comments (not quick, unmoderated discussions or in the thousands), a radical strip-down may suffice – neither server-code nor JavaScript, let alone a 3rd party: Pure atom xml rendered to html client-side via xslt in an iframe. No comment markup. Feel free to express yourself in unicode.
See e.g. at https://mro.name/blog/2009/08/nsdateformatter-http-header/