[filbertkm]

regarding OSM can't use content from Wikipedia... that has nothing to do with share-alike.

the reason is that stuff like coordinates in wikipedia are widely derived from Google Maps or Google Earth. OSM community is concerned that is a violation of database rights or license. Is Google Maps open data? from Wikipedia perspective, coordinates are just facts and not-copyrightable and the US does not have database rights, so it's ok; OSM is based in europe where there are database rights and the community is concerned for other reasons, also and reluctant to accept such Wikipedia-derived contents into OSM.

[chippy]

Also Google has said that their maps are copyrighted, and has a terms of service/use.