Maps are very important and serious stuff. Maps explain, and in many cases control, how the world is. Good maps are very difficult to draw. It is very unlikely that normal people (especially when they’re young) ever get a chance to create a good map, useful to their friends and larger community. This, at least was the case until some times ago. Today, working and playing together to build new maps that are really useful to everybody is much easier and much more fun than it used to be, thanks to a worldwide project called OpenStreetMap.