Earlier quoted context omitted.
I wonder what the motivation for that would have been. There seem to be many users of Ghost who are asking for this functionality and I don't think it's a big deal for the Ghost team to implement that. I think it is not a good idea to rely on a third party for commenting especially if you have a thriving blog. They could ban you or just shut down services(Google Plus comments), some insert their own ads(Disqus) and s…
Glad to hear it's no big deal to solve it :) https://github.com/tryghost - looking forward to your PR!
Like the GP, I was also under the impression that Ghost doesn't support commenting by design but you are suggesting otherwise. I find it hard to believe that adding commenting system(something that all major CMSs have had since forever) would be that technically challenging that it hasn't been added even six years after its first release.