App forces users to give to charity for playing cheesy tracks on Spotify

Handing over money to charity is enough for some to feel good about themselves, but nonprofits and social good organizations often find it difficult to elicit donations without offering something in return. We’ve already seen gaming site GoodGames let users raise money simply by playing ad-supported titles, and now the UK’s Guilty Pledgers is hoping to do something similar for music — charging partygoers for adding an embarrassing track to a Spotify playlist, and then sending the cash to charity.