** Update (02/07/11): Chris Brookins, VP of Engineering and Product Management at Acquia sent a note with clarifications to our original article regarding Drupal Gardens' offerings. The most important point is that Drupal Gardens is still in beta, development is under way, and the information in this article isn't final. **
Drupal Gardens is a hosted, self-contained setup of the Drupal 7 content management system. It is an appropriately named walled garden, allowing non-technical people to easily build websites with powerful features.