[OSM-talk] yahoo sat images and coastal outlines (newb q's)

[Minty]

Just started doing some gps plotting, tracing & labelling for
Edinburgh:)  Some questions arose, which I couldn't find an answer for
and we are most curious about:

re: http://www.opengeodata.org/?p=120

I assume the sat images are copyright?  So why is it okay to trace
from them?  Is there anything you can point me at that discusses the
issues for a newbie related to "Theres code in there which updates the
relevant image copyrights which we must respect, along of course with
Yahoos.".

Does this mean I don't need to bother taking my GPS around Edinburgh?
The sat images look good enough for tracing.

Also - where did the copyright free coastal outlines come from for the
UK?  Was this out of copyright data, or some US/NASA based data
source, or something else entirely?

Thanks,
Murray.