No subject

one of your identities; Yahoo will automatically choose that one.

If it is not one of your identities though; then you get the drop
down selection where you can pick which identity you want to use
(if you have more than one); and that identity is returned instead.

So it's half right; Yahoo! ignores the identity in the request if it
is not one of yours, but obeys it if it is one of yours.

At least that's what I'm seeing.
-- 
Deron Meranda