On 14/06/11 13:29, davespod wrote:
> If I understand things correctly (and assuming
> CC-by-SA holds water for data), they can charge for these derived data sets,
> but they would still have to be CC-by-SA, and so anyone who bought one could
> then redistribute without charge. Does that sound right?

Yeah, that sounds right.

> P.S. If they have de-duplicated these, as they claim, perhaps it is worth
> getting our hands on as a resource for cleaning up the database...

Anyone who pays to get the set off them receives it under CC-by-SA (or
"similar) and therefore the data can be contributed back to OSM,
attributed to them of course.

-- 
Borbus.

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