The Frugalist does a very nice job of introducing the open source Plone content management system to non-technical folks.
Some of the reasons why [open source] is very important to you are:
- the developers created this software for their own daily use, in the real world
- these technologies are NOT developed and licensed as commercial products
- by necessity this software is tested brutally and errors tend to get fixed quickly
- you are never tied exclusively to any one vendor or company
- the system is completely customizable and scalable to meet your future needs
- complete standards compliance means your site will stay current and viable