The Geographical Information System (GIS) design process usually
involves experts in specific application domains (e.g. geology and forestry).
These experts are responsible for capturing user needs, and communicating
them to GIS developers. However, as the community of users is not directly
involved in the design process, these experts may miss some user intentions.
This may lead to ill-defined requirements and ultimately in higher risks of
geospatial data misuse. In this paper, we present a collaborative user-centered
approach in the design process that aims at improving requirements collection
and description through a web 2.0 philosophy of having a more active
involvement of users. The approach consists of 1) analyzing the role users could
play based on requirement engineering guidelines, and 2) allowing users to
iteratively describe their intentions of data usage in given contexts.