@Shamar @kaniini @starbreaker @rysiek I'm skeptical of and concerned about commercial exploitation too. Problem is, "noncommercial" doesn't fix the things you'll expect it to, and will prevent things you want.
Here's a question: if Linux were noncommercial, should a community run nonprofit be legally allowed to run it in a commercially run hosting service / datacenter? Even if the hosting service profits from it? Can the cooperative collect dues?
@ebel @rysiek @cwebber @Shamar @starbreaker interesting... attribution can be difficult for artistic works too, e.g. combining CC graphics from multiple sources for print works or merchandise (where do you put attribution on a one inch button?).
OSM should probably also ask the contributor to license any of their original work under ODbL when they submit; dual licenses would probably make life easier in the long run, but also new versions of CC licenses can address this compatibility directly.
@diggity @rysiek @cwebber @Shamar @firstname.lastname@example.org
"Where do you put the attribution?" Sec 3(a) of the CC-BY-SA licence covers this.
Copyright holder gets to define a "reasonable manner" (3.a.1.i)
#OSM has a form letter ( https://drive.google.com/file/d/0B3PN5zfbzThqeTdWR1l3SzJVcTg/view ) which asks the holder to agree that a mention on the osm.org/copyright page suffices.
Also CC licence forbids use with DRM (2.a.5.c), OSM licence allows it if you offer parallel download.
Moytura. Destroy the old gods.