I gave a presentation on the .NET 3.0 Rules Engine at the last software architecture group meeting.  I stumbled upon the technology when a project I recently worked on called for the use of a rules engine.  A fellow developer suggested I look in to the .NET 3.0 Rules Engine.  I was completely confused; I had been working with the 3.0 framework for several months with no knowledge of a rules engine.  After a couple hours of research, I uncovered the rules engine embedded in the Workflow Foundation.  I had no idea that it was possible to leverage this technology independent of workflow.  There is very little content on the rule engine itself.  Most information is buried in articles about the Workflow Foundation.  In my opinion, this technology is worthy of its own namespace.  Below is a link where you can find several samples of the rules engine.

http://wf.netfx3.com/files/folders/rules_samples/default.aspx

I have attached the PowerPoint slides from my presentation and a sample application demonstrating a simple implementation of the technology.

Code sample:

http://www.infusionblogs.com/mglace/Code%20Samples/SimpleRulesEngine.zip

Presentation:

http://www.infusionblogs.com/mglace/Presentations/RulesEngine.pptx