One of the main problems with sharealike/copyleft is the large number of incompatible licenses. I suggest explicitly adding some important such licenses to 4.4 iii, so we don't lock too many other free communities out from using OSM data.
At least the most common ones like GPLv2 or later, LGPL, GFDL and CC-BY-SA should be added. Use case 1: Creating a flyer about some topic where images from wikimedia commons are combined with a map created from OSM data. According to http://commons.wikimedia.org/wiki/Category:GNU_licenses there are 1319405 GFDLed, 6127 LGPLed, 13575 GPLed and over 400000 CC-BY-SA (different versions) images on Wikimedia commons. Use case 2: Using OSM in a documentary movie: Places relevant to the movie's topic are shown on a map created from OSM data. Zoom in to a place, then there's a movie sequence about that place, repeat for other places. For the documentary footage placed under a CC license from archive.org's moving image archive is used. Philipp _______________________________________________ legal-talk mailing list legal-talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/legal-talk