Hey @noamross!
@apreshill and I have been playing around with some of these features on RStudio Connect.
I have a minimal working example on RStudio Connect courtesy of utterances . I adapted Miles Mcbain's code from his blog, and only needed to change the repo to my own repo-name.
Example live minimal blog with comments at: https://colorado.rstudio.com/rsc/comments-distill-blog/posts/welcome/
I'll be exploring other options more focused on folks who may not use GitHub, but really happy that I got this working essentially first try!