Oh, oh, I’m doing another Killing the Sacred Cows of Publishing post. Stay tuned, I have a hunch there will be more. And it’s time for me to redo some of the old ones as well. Things have changed. Why this topic? Why now? Over the last month or so I have been hammered by all kinds of writers bent on the belief, the myth, that giving a percentage of their work away is a good and smart thing to do. I went to the conference I talked about in a previous post and heard writers talking about giving away percentages. My wife, Kristine Kathryn Rusch, on her blog every…