Good question. And the video doesn't explain this well enough, but questions will only show on your profile if you answer. If you do not answer them they are no

Good question. And the video doesn't explain this well enough, but questions will only show on your profile if you answer. If you do not answer them they are not displayed publicly to anyone. That said, you can also hide previously asked/answered questions from your profile too. Do sign up and give it a chance. We're in beta and we're all ears for feedback.