[alasdair_]

Exactly. The title is pretty bad. All they are doing is displaying the data in one particular editor. It's like displaying google streetmaps in another window when you edited open streetmaps - there is no "contribution" of data at all.

[toomuchtodo]

This is not true. What you described would violate Google’s copyright on their mapping data (or the copyright owner they’ve licensed it from, depending on the data).

[boise]

this +100000. The huge-ness of this contribution to making openstreetmap better is underscored by the fact that you're not allowed to do this with Google Street View (Section 10) https://developers.google.com/maps/terms