If this interests you should check out gist.io as well as an alternative. Slightly different concept, but still equally interesting.
source: https://github.com/idan/gistio
source: https://github.com/idan/gistio
It supports listing gists with specific tags, such as "blog" (along with other features, e.g. custom css/js/html and latex)
Home page: http://jist.in
Source code: https://github.com/zhuzhuor/jist/
I really couldn't wait for Github to develop Gist more features than a VCS notepad.