[OSM-talk] cloudmade maps copyright terms and conditions

[Anthony]

On Tue, Dec 1, 2009 at 7:01 AM, Roy Wallace <waldo000000 at gmail.com> wrote:
> On Tue, Dec 1, 2009 at 9:41 PM, Martin Koppenhoefer
> <dieterdreist at gmail.com> wrote:
>>
>> "If I have data derived from OSM data, do I have to distribute it? The
>> licence does not force you to distribute or make any data available. But if
>> you do choose to distribute it, or anything derived from it, it must be
>> under the same licence terms as the OSM data."
>>
>> I read this like cloudmade could use their maps for their own purposes
>> without redistributing it, or they have to put their maps under cc-by-sa 2.0
>> as well. Or did I misunderstand something?
>
> Well...does showing a map on a website mean you are "distributing" it?

That's somewhat disputed in the US.  If you're not "distributing" it,
then you're publicly displaying it.  But most courts have said it's
"distribution", despite the fact that people arguing for "public
display" have a better legal argument :).

CC-BY-SA doesn't seem to have any provision for public display of
modified versions.  Which I suppose technically means you're not
allowed to do it at all.