DrupalSN is essentially a Drupal showcase both in terms of the site itself and also as a place where Drupal developers and designers can showcase their Drupal projects all in one place. I hope Drupal developers and designers will use the site as a way to gain exposure to complement their portfolio
It’s also meant to be a bit of fun where people can interact and see how Drupal can effectively be used for a social network.
I hope the site can complement Drupal.org and Drupal Groups in a fun and different way but ultimately the goal is to promote Drupal!