GeoWeb 2.0 is the geographic embodiment of the Web 2.0 moniker for the next generation Web, i.e., the next generation of geographic information publishing, discovery and use. With the proliferation of the Internet as the primary medium for data publishing and information exchange, we have seen an explosion in the amount of online content available on the Web. In addition to professionally-produced material being offered free on the Internet, the public has also been encouraged to make its content available online to everyone as User-Generated Content (UGC).The goal of the GEOCROWD project is to establish a fertile research environment by means of a training network that will promote the GeoWeb 2.0 vision and advance the state of the art in collecting, storing, analyzing, processing, reconciling, and making large amounts of semantically rich user-generated geospatial information available on the Web. Specifically, activities will be centered on (i) exploiting user-contributed geospatial data, (ii) Web-geodata management and (iii) efficient means for data collection and dissemination, e.g., mobile computing.Our goal is to tame this data explosion, which applied to the geospatial domain translates to massively collecting and sharing knowledge to ultimately digitize the world.