Back in January I wrote about using Drupal as a tool to create decentralized online advocacy campaigns and the upcoming release of the Activism module. We

The Activism module is a framework which we hope will standardize the way in which online advocacy tools are built and deployed with Drupal based websites. The module comes packaged with three modules out of the box:

1. Activism Core: This module creates a Campaign content type with some standard configurations for setting up online advocacy campaigns.
2. Activism Petition: This module allows you to set up online petition forms by selecting from a number of fields pre-packaged.
3. Activism Tell-a-Friend: This module allows you to set up online tell-a-friend pages which allow users to send emails to up to 10 people at a time.

Watch the screen cast of how to set up an online petition and download the module at http://drupal.org/project/activism.