Abstract: A challenge system comprising a host server connected via a network to a set of participant devices enable the set of participants to act as a set of challengers and a set of challengees in a social media forum. The host server includes a database and is configured to facilitate the creation and dissemination of a challenge from a challenger and to facilitate the acceptance of challenges from a challengee. The challenge is related to an event such as a sporting event or group event and includes a payout requirement. The payout requirement can be a non-monetary requirement such as a requirement for a participant to perform a particular action. The challenge system verifies winners and losers of the challenge and verifies the payout requirement. A challenge process can be performed on a public forum and includes posting of advertisements related to a challenge or challenge payout.