The Magic Circle absolutely does not like revealing the trick. Penn and Teller are all about revealing the trick. They see it more or less as their moral duty to make sure you know THERE IS NO MAGIC HERE.

I've always respected them a great amount for that. I'm glad that The Magic Circle finally came around.

Do they reveal "novel" tricks they didn't create?

It's one thing to reveal standards like the cups and ball, but another entirely different to spoil a recent trick a living magician is still making money off. I don't think they do the latter.

The balls and cups with transparent cups is still amazing, by the way.

They do not reveal other, living magician's tricks.

So all's good in my book then!

Teller has sued at least one magician for revealing Tellers trick

I think it was because they sold the secret as theirs, not for revealing