Christian Tillegreen and Frank Hatzack from Novozymes have published a slidedeck with a summary of their experiences with the community features in SharePoint 2013. Great ideas and use cases.
All in all this was a great first experience! We are especially intrigued about the social and collaborative Features, the ease with which we can build our own social sites, and it seems SharePoint 2013 is (almost) ready for today’s Enterprise organizations.