As I promised myself and the world, the first edit would be my home street. Now it has been done :-)
I decided I would try Merkaartor, and it did not take too much fiddling to create a new (and correct) representation of my home street. I suppose the other streets in the neighbourhood are up next since they are currently either non-existing or incorrect (incorrect name, incorrect path). I suppose they have been created by converting freely available map data at one point in time.