The CiviCRM community has just announced that they want to integrate with WordPress.
CiviCRM is a free, libre and open source software constituent relationship management solution. Designed specifically to meet the needs of advocacy, non-profit and non-governmental groups.
It is integrated with Drupal and Joomla, but not with WordPress due to licensing problems. Theese problems are now solved and they are looking for someone to help with integration.
Anyone who takes the challenge?