Resumen
We are currently witnessing ordinary citizens willing to share geospatial information using friendly and easy-to use tools provided by Web 2.0 platforms. These platforms act as social networks describing events with large social impacts. Social networks are filled with volunteered information before, during, and after events that occur near human settlements and urban areas. The amount of this geolocated information is increasing due to the increase of location-aware devices that allow users in the field to share knowledge about an event?s evolution and impact. In order to retrieve this information one interacts with the different search mechanisms provided by various Web 2.0 services. This paper explores how to improve the interoperability of these various Web 2.0 platforms by providing a single service as a unique entry. This paper demonstrates the utility of the Open Geospatial Consortium?s Open Search Geospatial and Time specification as an interface for a service that searches, retrieves and aggregates information available in different Web 2.0 services. We present how this information is useful in complementing other official and scientific information sources by providing an alternative, contemporary source of information. We demonstrate this with a proof of concept presented in a forest fire scenario. The intrinsic interoperability of the system is reflected in the collaborations shown with different information systems such as those at the biodiversity and forestry units in the Institute of Environment and Sustainability at the Joint Research Centre.