The motivation behind the WoH is the Paradox of Choice — basically, making decisions is stressful. It's true at the super market and it's true with online hackathons.
At any given time, ChallengePost is powering 10-20 online hackathons, often more. And while they each have great prizes, cool APIs, and fun problems, picking one from a group of 20 is still difficult. So, I thought, why not eliminate choice and make it random?
I searched Github for "wheel of" projects, and found an excellent repo called Wheel of Lunch by Jack Palmer. WoL uses your location to populate a roulette wheel (built with canvas) with local restaurants and when you spin the wheel, it selects one at random and provides you with a Google Maps link. It also throws up some HTML5 Confetti.