Symfony2 blog bundle is based on the WordPress database model.
In order to install this bundle if you are using SE you should add the following to your deps.
You want to fork the central repository. Then do add the following:
- [PSSBlogBundle]
git=https://yourusernameongithub@github.com/yourusernameongithub/PSSBlogBundle.git target=/bundles/PSS/Bundle/BlogBundle