This looks like a great project, and nice to see them supporting OSM. Google gets (rightfully) lauded for offering quite good maps[1] of much of the developing world, but I recently checked out the OSM map[2] of the city I live in (Dakar, Senegal) and it's just as good, if not better. Bing Maps[3], by comparison, thinks there are 2 roads in the entire city.
[1]https://www.google.com/maps/preview#!data=!1m4!1m3!1d104828!...
[2]http://www.openstreetmap.org/#map=12/14.7286/-17.4508
[3]http://binged.it/1iUjAGi