Drupal Distributions are pre-configured for a specific type of site and use a variety of contributed modules. Here are some that have been in the spotlight recently.
Tattler , created by Phase2. “Tattler (app) is an open source topic monitoring tool for today’s Web. Tattler finds and aggregates content from the Web on the topics you want.” Listen to the Acquia interview with Phase2 about it.
– David Lanier
Director of Web Development