[OSM-talk] Can I say "yes" to the ODbL if I can't account for 100% of my data?

[M∡rtin Koppenhoefer]

2011/6/16 Toby Murray <toby.murray at gmail.com>:
> On Thu, Jun 16, 2011 at 4:37 AM, Graham Stewart (GrahamS)
> <graham at dalmuti.net> wrote:
>>
>> and that the source tag is certainly recommended, but not enforced.
>
> There is no such thing as an "enforced tag" in OSM. If you choose not
> to use a tag then that is your choice. Not using a source tag when
> basing your mapping on an external source is a poor choice. And not
> just for copyright reasons. It also lets other mappers know how much
> to trust the data. When I come across data that seems like it might be
> a little off to me I treat things that have a source=survey tag much
> differently than things that have a source=<random import> tag.


You can also put this information in the change-set-comment. IMHO this
is where this belongs to. AFAIK the source-tag is disputed and it is
recommended to use the changeset comments.

cheers,
Martin