During the past year, I've posted various articles on social publishing systems. Open source content management systems such as Drupal, Movable Type, and WordPress have done a lot in the past year to better incorporate social media features into their web applications. I think the topic of social publishing will continue to be an interesting topic as the CMS continues to evolve in order to stay current with the current social tech trends.
The following is a WordPress.TV video of Andy Peatling, Automattic, talking about the WordPress social networking system BuddyPress at WordCamp Montreal. In the video Peatling gives practical advice for people considering WordPress/BuddyPress as a platform.