We’ve seen that Org Mode is a flexible and extensible way to publish HTML from within Emacs. There are numerous ways in which one could push the resulting HTML to a server and thereby serve a static website. That said, a static site can be... limiting.
It is a way of broadcasting content to a passive audience, but no more. It provides no way for readers to respond to the content. Commenting as a service is available (from Disqus, for example), but in the first place such services always feel grafted-on to the host site, and in the second, if you’re going to the trouble to host your own site, are you really comfortable offloading the resulting conversations to a third party?
Additionally, although consumers are becoming increasingly chary of entrusting their online identities (and data) to sites like Twitter, the reality is that a great deal of public coversation continues to take place there (and on Facebook, Reddit, &c). A self-hosted, static web site offers no connection to such fora.