StickK allows users to set a public or private commitment and add monetary stakes to increase accountability. One notable feature is setting negative stakes: if you fail to follow through with your commitment, you can tell StickK to donate money to a cause you dislike. Most people will take extreme measures to avoid the “cognitive dissonance” of donating money to a cause against their identity. For example, perhaps someone is an avid fan of Arsenal Football Club AND wants to exercise four times per week. They might create stakes to donate money to Chelsea Fan Club (an intense rival) if they fail to hit their goal. What stakes would motivate you to follow through?
Source: Ben Meer