We're trying to resolve this very same question. But we must not be understanding Keystone's explanation.
Are you saying you find the cache closest to the centerpoint, click "view map" (where's "Map It"?) and then the coordinates of the centerpoint will literally be contained in the resulting URL?
We must be doing it wrong, since we get different coordinates in the URL when we try the second closest cache to the centerpoint (if that makes sense). Wouldn't the same centerpoint be displayed in the second closest cache? In this case, the closest cache is 0.2 miles from the center, the second is 0.3 miles from the center.
We can pretty much figure out where the center is, but would like to know exactly. Thanks for any further explanation you can provide.