Concrete examples of honest people with anything to fear from the GPL
gojomo: At one level, your question contains the seeds of its own answer. Strong GPL partisans tend to assume anyone doing things where the GPL language/intent is fuzzy is "doing something obviously questionable".So one fear is, you could wind up on the right side of the license and the law, but still face resentful, accusatory opinions from parts of the community. And thus a related fear: your project could be distracted by long discussions like these.