IDG.net (via CNN.com) has a short primer. It asks, "Why doesn't everyone use Open Source software?" Good question! The answer: "The concept of open source software is sometimes hard to
understand for IT executives who are familiar with traditional
ways of buying software. Concerns about support and
accountability are valid when thinking about using open source
software. But supporters assert that open source is more
reliable because problems can be found and fixed quicker.
The success of the Linux operating systems (a version of the Unix operating systems and a free alternative to
Microsoft Windows) has improved the reputation and increased the popularity of open source development."