stickK (www.stickk.com) stickK was founded on the principle that creating incentives and assigning accountability are the two most important keys to achieving a goal. Cofounder Dean Karlan, an economics professor at Yale, came up with the idea of opening an online “Commitment Store,” which eventually became stickK. If you don’t fulfill your commitment with stickK, it automatically tells your friends and opens you up to endless mockery and derision.