[OSM-talk] [Osmf-talk] Attribution guideline status update

[Joseph Eisenberg]

The attribution should be at least (c)OpenStreetMap, but it's fine to
give more detail like:

1. Using just the coastal shoreline in the basemap:

(c) OtherDataSource, coastline (c)OpenStreetMap

2. Using OSM basemap in 1 along with roads, rivers and water bodies

<other data> (c) OtherDataSource, basemap (c)OpenStreetMap

3. Using OSM basemap with 2 and buildings

(c)OpenStreetMap, <other data> (c) OtherDataSource

It seems simpler to just clearly state "you need to include
(c)OpenStreetMap on the map if you use OpenStreetMap" rather than
making more complicated rules.

- Joseph Eisenberg