From the "Braindump" section over on DevShed today there's a new article sharing some helpful hints on picking out that right Open Source content management system that you need for the job.
A Content Management System (CMS) provides a straightforward way to maintain a web site, allowing site owners to include interactive features such as article publishing, file uploads and sharing, forums and blogs with a minimum of coding. And a good CMS will also allow extensive customization to the site's layout and appearance, so it doesn't end up looking like thousands of other sites built on top of the same code base.
The look at a few of the priorities to consider - multi-author support, metadata management, ease of use - as well as technology and business considerations. Systems they look at in their overview include Joomla, Drupal, Mabo and Plone.