Geneva is an international city. There are a lot of international organizations in the city: UN, UEFA, WTO, etc.
I am currently working on mapping Geneva with addresses. I use bicycle and [OSMpad] (http://wiki.openstreetmap.org/wiki/OsmPad) for iPhone 4S, and my own free time, mostly on Sundays.
If you want to join this project and do not know how then write me a message and I would provide some tips. To support the project visit my website [www.openbusinessmap.org] (http://www.openbusinessmap.org)
It would take about two years in my estimation to mark all house numbers in Geneva.