Interesting. I've seen increasing number of posts on Github Pages[1], Octopress[2], Medium[3], and Svbtle[4]. It seems that (at least in the hacker community) there is an increasing shift to minimalist blogging stacks. I'm excited to see if the rest of the world follows.
[1] http://pages.github.com/
[2] http://octopress.org/
[3] https://medium.com/
[4] https://svbtle.com/