2011-06-23 John Smith:
> On 23 June 2011 21:15, Tobias Knerr <o...@tobias-knerr.de> wrote:
>> No, it isn't. It has the attribution right there on the "Copyright &
>> License" link.
> 
> Unlike every other map site out there where the main attribution is at
> the bottom right side of the map.

Maybe you just don't know enough maps - there are plenty that list
attribution elsewhere. This includes lots of maps for mobile devices
(because these happen to have limited screen space), but also maps that
use multiple sources (because in these cases, even a large screen would
get cluttered with legalese). Static maps (e.g. map images in Wikipedia)
also frequently use different attribution mechanisms.

>> The "Demo archive.org Tile Hosting" map, on the other hand, fails to
>> attribute OpenStreetMap. It just mentions fosm.org, and thus violates
>> the license's requirement that the original creator's attribution needs
>> to be displayed as least as prominently as that of later additions.
> 
> The data is rendered from FOSM data.

Which is derived from OpenStreetMap data. Therefore, the tiles are
ultimately derived from OpenStreetMap data, too. Quoting CC BY-SA 2.0:

"If you distribute [...] any Derivative Works or Collective Works, You
must keep intact all copyright notices for the Work and give the
Original Author credit reasonable to the medium or means [...]. Such
credit may be implemented in any reasonable manner; provided, however,
that in the case of a Derivative Work or Collective Work, at a minimum
such credit will appear where any other comparable authorship credit
appears and in a manner at least as prominent as such other comparable
authorship credit."

-- Tobias Knerr

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