Your biggest non-technical hack/discovery
zackattack: For many years, jamba juice was running a promotion: buy a $25 gift card, get a free jamba juice. So one day I bought a gift card, got my free razmatazz, and was about to head out on my way when I doubled back.Me: "I'd like another $25 gift card please."Cashier: "That will be $25. What is your free smoothie?"Me: "Peach pleasure."And then I would pay with the previously purchased gift card, creating an infinite loop with a sunk cost of $25. I was only once refused. I netted at least 50 jamba juices for me and friends..I hope to incorporate this into a screenplay some day.