I started some work on a blog system that would operate on simple files (using markdown syntax) and not use any database at all. The purpose was to give everyone who wants to write something about web development or actually any topic some space.

You can see the site at http://hollow.phpixie.com and the best part is that you can write your own posts on it, so if you have something to share, like a project you want to showcase, a tutorial, anything really, you just fork Hollow on Github, and write your posts inside the /posts folder, just remember to prfix them with the date like 20130326_Welcome.md. To add a category, just create a subfolder inside it. The really important part is that everyone can edit your post by forking it, so it’s more or less like a wiki. I will accept pull requests as soon as they arrive so you won’t have to wait long for your posts to appear on the site =).
Of course you can always download the code and set it up as your own website if you want to.