Are WordPress themes necessarily open source? (Dave Winer/Scripting News)

Dave Winer / Scripting News:
Are WordPress themes necessarily open source?  —  An interesting question has come up in the WordPress community.  —  I am writing about it before I’ve heard both sides, so I can say what I think without being influenced by other points of view.  Later I will try to absorb them and see if I change my mind.

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