Habari
There's still some work to do, but meta4.com.au is finally running Habari, a state-of-the-art publishing platform!
There are already plenty of 'Habari is...' type posts around the place, spreading the word about how wonderful Habari is, but it's worth throwing in our two cents. We've chosen Habari to run this site due to its beautiful, elegant code base and clean flexibility. But most of all, we chose it because I love working with Habari. Expect to see this site evolve and grow over the coming months. To borrow a phrase, it's gonna be awesome!
Habari is a community-driven project created and supported by people from all over the world. Visit http://habariproject.org/ to find out more.