Crap now that effect is ruined and every one will no how to do it. Wait but that's also where I learned to do it. And no one I've done it for knows it's secrets. I wonder why that could be? Oh wait, maybe it's cause we have different audiences. I perform for friends, family, coworkers, and random people at parties. Scam Schools audience is 90% amateur magicians and people who don't want to pay for beer.
So I guess the worry would be that if someone were to Google what I did they would get the Scam school video. So I tried that with the latest scam school video;
It was not very effective. As I've said before it's not easy hunting down a method if all you know is the effect it produces. You would really want to know badly in order to not say to hell with it and just go on about your day.