This article presents a social approach for disaster management, based on a public portal, so-called Disasters 2.0, which provides facilities for integrating and sharing user- generated information about disasters. The architecture of Di- sasters 2.0 is designed following REST principles and integrates external mashups, such as Google Maps. This architecture has been integrated with different clients, including a mobile client, a multiagent system for assisting in the decentralised management of disasters, and an expert system for automatic asignation of resources to disasters. As a result, the platform allows seamless collaboration of humans and intelligent agents, and provides a novel web2.0 approach for multiagent and disaster management research and artificial intelligence teaching.