i agree that he probably couldn't see the expression on my face. but i'm not OK with people flying them in my air space. i was where few people were at the time, so he was just being a jerk. but if they start flying over my house, i would consider it an invasion of privacy. i would imagine if you took video of someone, even by accident, and uploaded to YouTube, you could be in for a potential law suit if there were no "model release form" with the persons signature. i'm sure they are very cool to mess with, but i'd be mindful, that not everyone wants to be a star.