Tolstoi21
(Tolstoi21)
5
I too use GPS tracks for all the roads, etc, but Landsat has a sufficient resolution to pretty precisely map different landuses, mainly patches of forest, farmland and the like so no fuzzy extrapolation or huge amount of note-taking is needed.
I read the OAM page also and attribution to them, I understood, is needed when one uses their data (even the Landsat images they host? Landsat is public domain, is it not?). I suppose the source tag is sufficient?