Twitpay is a social payments platform that allows users to make donations on social networks like Twitter and Facebook through engaging actions like retweeting or sharing. The process is simple - a nonprofit tweets a call for donations, a user retweets it, and Twitpay sends a confirmation message. If the user replies "yes", the donation is complete. This approach leverages the viral nature of social sharing to exponentially increase fundraising. Twitpay also offers benefits over SMS giving like no intermediaries, no setup fees, daily payouts to nonprofits, and engagement through sharing. It aims to expand into social gaming payments by allowing users to tweet a payment confirmation to receive virtual goods in a game.