The "Rubber Band Trick" as many of us used to call it, was quite obscure for years. . .untl Magic-Bartender Bob Jardine found it in Tarbell and started performing it in the Hat & Hare Pub (one of the bars in the Magic Castle). Bob managed to keep it quiet for close to a year but magician's being magicians. . . well, the cat got out of the bag and as they say, the rest is history. . .