Teaching magic isn't the problem teaching marketed effects and moves, with a living creator is the problem. A tutorial on the classic pass isn't that bad. Tutorials for things like dresscode, pressure, the clipshift, and the snap deal/laser deal are very bad. It is disrespectful, unethical, and far to common. Brian Brushwood is very careful about what he teaches on Scamschool and others should follow his example. Exposure is teaching something that you shouldn't or just exposing it. Teaching means you actually have a right to teach it.