swa66 - 11:04 am on Apr 14, 2013 (gmt 0)
Agree. With OAuth essentially the user logs in at the authentication provider and you do not get to see their credentials. All you know is that they logged in successfully.
As far as I know OAuth protocol, it does not work like that.
But if you use the Google+ features you can access things like circles.
Some links to get you started:
Note that using it is dependent on accepting policies and terms:
Which do limit in what you are allowed to do.