website for sharing maps created with the GMapCreator software, released by CASA. The maps themselves are not stored on the server -- only a link to another site on the Internet where the map is published. When maps are shared, information about what the map is and what it shows is entered by the owner and this is stored on the server along with the link to where the map is published. The raw data is never stored on the Internet as the maps comprise the pre-rendered tiles made by the GMapCreator, so this is a safe way of sharing a map without giving away the raw data used to create it. MapTube is a product of the work undertaken by the Geographic Virtual Urban Environments (GeoVUE) team based at University College London's Centre for Advanced Spatial Analysis (CASA). GeoVUE is a research Node of the National Centre for e-Social Science (NCeSS). NCeSS (http://www.ncess.ac.uk/) is funded by the Economic and Social Research Council (ESRC)