text: Using sources of data to build OSM is a very big violation of the rules and can get you banned for life from editing OSM. The copyright of OSM is very important and we should all be diligent about not contaminating the dataset. Whether you agree with other people's licenses, or OSMs license, or licensing in general, at the very least respect the intent of OSM to create a free dataset by abiding by the rules that give the OSM dataset legal integrity.