After you install or upgrade to Drupal Commons 2.x, you can use the following new features to better connect with the people that view and use your Drupal Commons site:
- Activity streams - Drupal Commons 2.0 and later
Communication between users without having to explicitly create formal content.
- Question content type - Drupal Commons 2.5 and later
Allows for users to post questions and answers as site content.
- Subgroups - Drupal Commons 2.0 and later
Groups of users inside of larger groups.