Hello, at FOSSGIS-conference I learn two projects that could be an inspiration for Wikimaps:
*Swisstopo scans all there maps of Switzerland and present them also as nice animations: http://www.swisstopo.admin.ch/internet/swisstopo/en/home/175/timetravel.html
*A nice WebGL-experiement that makes a real-time wraping of maps. (Website in the moment not available and it seems to work in the moment only for low-res maps, but it was so amazing.): http://dev.klokantech.com/map-transformation/
For Wikimaps we should later also be able to use other reference than the earth WGS84, so what with photos from the moon surface? Ok, the moon is a little bit far away but i think we should be able to match images with other hi-res images from same position, but from different time.
I know my mail is a little bit offtopic, so back to work to bring a small, first system to live.
Greetings Tim alias Kolossos