Blogwiki is an experimental Confluence plugin, that lets you use Confluence
as a public blog, with the specific feature that besides blog posts, also
wiki pages are published to the front page. Hence the name blogwiki. It's a
wiki that acts as a blog. And no, there's not a don't-publish-option, thats
the point.

Usage:

 - install the plugin
 - select "Blogwiki" as global theme.
 - enable anonymous access in the global permissions sections
 - enable anonymous view access in every space

That's it.