I'm curious how they use OSM. If they mix the OSM data with other data, then OSM's GPL-like 'share alike' licence clause kicks in.... > They use OSM (and about

I'm curious how they use OSM. If they mix the OSM data with other data, then OSM's GPL-like 'share alike' licence clause kicks in.... > They use OSM (and about 300 other sources). On a map, click on the "legal" link, then click through the "more" link to see the list. If you don't merge OSM data, then you only need to attribute OSM. And I don't think this is sufficient for the licence, which says: "You must include a notice ... reasonably calculated to make any Person that is exposed to the Work aware that Content was obtained from [OSM]". i.e. basically every map has to say "OSM"