Can you keep a secret?
Well, I can't really see a way to solve this along the lines of what everyone else is thinking... YouTube petitions are never going to work. But I can see why magicians get mad at this: 10-year-old kids making easily accessible videos of themselves exposing/poorly performing tricks that other magicians work their butts off to perfect is not exactly cool. How I see it: If you are going to make yourself known as a PHENOMENAL magicain that can do things that absolutely GET REACTIONS every single time, you are going to spend most of your time practicing. (no surprise) The only way to protect all the time and effort you've spent is create. Once you know the secret to your trick, who else needs to know?
Just my thoughts,
-Matt