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I should clarify. It's more that the old newspaper/publication opt-ed mindset where a columnist writes a piece that goes out to readers in a one-way form of communicating that doesn’t facilitate responses easily, has given way to a more open exchange of thoughts between reader and/or author. It’s his blog and his rules of course, but I don't see the value in discouraging a full-on discussion that may arise out of something compelling which someone wrote. I’d like to think that’s one of the great things about blogging, in that it democratizes the development and sharing of ideas.