> is available for the low price of attribution That depends. The OSM licence requirements depends on what you do. If you don't produce a geo database, then th

> is available for the low price of attribution That depends. The OSM licence requirements depends on what you do. If you don't produce a geo database, then there's only an attribution requirement, otherwise you have to attribute and release changes to the data you made, along with any other data that you mixed in. It's like BSD for some uses, and GPL for others.