Sorry... owing to the effort required to create panoramas and insufficient time available on my part to spend on the project, OpenTrailView saw no updates since early 2011, was still using the OpenStreetMap Mapnik tiles from the OSM server and Freemap 0.5 code, and therefore has been hopefully temporarily taken offline. Source code is available at https://github.com/nickw1/Freemap under the "otvnew" directory so if you wish to work on this project yourself, please check out the source code.
However it is possible that OTV will go online again soon as a result of developments in panorama-generation technology on smartphones. If so it will be UK only due to insufficient resources to hold worldwide maps.
Any questions please contact me Nick Whitelegg here.