Is there a rule/regulation in OSM wiki whether and how OSM mappers can upload their (the same)data to other map sources, e.g. to Google maps?
asked 20 Mar, 07:15
Uploading data that you have created yourself (e.g. through a survey) to both OSM and other platforms is totally ok from OpenStreetMap's point of view.
Care has to be taken to ensure you actually own the data or have been granted the necessary rights though. For example, there might be imagery sources explicitly cleared for use in OSM but not for other purposes. Bing is such an imagery source - while OSM doesn't care what other things you do with stuff traced from Bing, the license granted to you by Bing explicitly talks about uploading to OSM, i.e. it is not valid for uploading to Google.
Also, if you should create data in OSM that is somehow derived from other OSM data - for example if you draw a road that runs parallel to a river already in OSM - then that data is subject to ODbL and any site you upload the data to must respect that.
(Richard points out in another answer that actually the data in question has been imported from a common source so the above is, while a valid answer to your question, not really relevant to your particular example.)
You are jumping to conclusions.
The source tag on the OSM data is "NRCan-CanVec-8.0". This is a freely available Government dataset. It is the successor to the GeoBase dataset which Google acknowledges using: http://www.google.com/intl/en_ALL/help/legalnotices_maps.html
There is absolutely nothing unusual in Google and OpenStreetMap having the same data when that data has been mechanically imported from a third-party source. There is no reason to expect "some divergence" in this case: both sites use a Spherical Mercator projection.
answered 20 Mar, 15:54