Apparently Shaun Walker read my {End Bracket} article in MSDN Magazine.  He responded on his blog with You Should Learn DotNetNuke.

I have an appreciation for DotNetNuke -- it's definitely the right solutions for some clients/organizations.  In fact, when faced with the question about whether to setup SharePoint or DNN for the church I am a member of, I chose DNN.  I wanted to get a better understanding of DNN so I performed a technical edit of the Wrox title Beginning DotNetNuke Skinning and Design

I have a great deal of respect for DNN.  Most of my work -- because my clients generally deal with documents, and large scale sites -- is SharePoint.  However, DNN is a great alternative.