I didn't say Cory Doctorow should be ignored because he is a blogger; I said he is defending the production of material that benefits his own interests. Pointi

I didn't say Cory Doctorow should be ignored because he is a blogger; I said he is defending the production of material that benefits his own interests. Pointing out interest is not the same as attacking someone's identity. Your example is false; it is not like saying someone's argument should be ignored because "he's a senator." It's like pointing out that a senator is arguing for a bill that benefits a company he holds stock in. There's nothing convoluted or ad hominem about it.