I got a miniature set of linking rings in my first magic set as a child. It's like Jim Steinmeyer said..."Magicians are guarding an empty safe". Yes of course we should do our bit to keep the secrets of our art but 90% of it is available to anyone with a smart phone if they care to look. I had heard good things about 'Royal S***' by John B****n so I went onto YouTube to see him performing, what I found was some kid doing the effect badly then exposing it. I Immediately ordered the official version which is excellent by the way. Do the effect very well and even those who think they know will be fooled and as has been already mentioned never give the true name of an effect to an audience full of smart phone owners...you are just asking for trouble.