Abstract
This research proposes to analyze the impacts and challenges of an omnipresent geographical cyberspace. Spurred on by web 2.0 and that of virtual globes (Google Earth, Virtual Earth, World Wind), the production and diffusion of geographical knowledge undergo further transformations. Virtual spaces and other location-based services (LBS) are gradually replacing the paper map and tourist guide. These uses contribute to the emergence of a complex space where uses in real space and uses in the virtual space mingle. Meanwhile, production of geographical interest results outside areas which, until recently, were the initiators and traditional users: universities, research organizations, professional geographers, states, NGOs, military ... This thesis will enlighten the reader on the geographical reality of the (new) uses of cyberspace, whether related to the production of "amateur" geographical content (neogeography) or to consumption "augmented" of geographical space.