The vision of “created once, used many times” has been spread out across the globe through the development of geospatial data infrastructure (GDI) initiatives, including their geoportals. Within the GDI, a geoportal facilitates discovery of and access to geospatial data. This chapter discusses some key considerations for the success of a geoportal in facilitating users to exploit the GDI potentials. The top priority is to offer a usable interface that facilitates visual thinking when users search and browse metadata items. Advanced support to enable geospatial and non geospatial web content integration and to advance group work activities through the geoportal are also considered of high importance.