[OSM-newbies] Trust Yahoo or OSM?

[David Ellams]

On Sun, 13 Sep 2009 09:53 -0600, "James Ewen" <ve6srv at gmail.com> wrote:
> On Sun, Sep 13, 2009 at 9:39 AM, Habib Habib <metni009 at gmail.com> wrote:
> 
> > I am starting to edit maps by using Yahoo images. The area that I'm mapping
> > has already many buildings layed out. However, they seem displaced a bit and
> > do not match the map correctly. My question is, should I trust Yahoo and
> > correct the positions of all buildings, or instead trust OSM?
> 
> The aerial photos can be displaced slightly. Potlatch has a built in
> facility for moving the background photo to align it to the real
> world.

Sorry, I am not clear - are you saying Potlatch will allow you to move
the Yahoo photography from its default position? If so, please could you
let me know how, as I cannot see an option.

Cheers

David