The document discusses crowdsourcing and crowdfeeding as participatory information management systems. Crowdsourcing involves outsourcing tasks to a large group of people through an open call. It has advantages like collecting timely information from affected communities. There are different crowdsourcing methods and key components include defining the issue, engaging the crowd, using appropriate tools, analyzing information, taking action, and monitoring results. Crowdfeeding involves sharing information with the crowd horizontally for their benefit. Factors like trust, infrastructure and motive alignment affect crowdsourcing success. Risks include verification of information and ensuring structure, impact and sustainability of projects.