A quote from their blog site: From Yahoo!'s viewpoint, any signed-in individual engaging with Yahoo! services is a valued customer, whether she validates using a Yahoo!, Facebook, or Google ID.
Sign Into Yahoo Through Facebook
Login to Yahoo Mail account on PC/Desktop computer
First you require a username and password; currently open web internet browser from your computer/desktop. Then open page www.yahoomail.com on it. To initiate their new "one-click" sign-in simply click the "Sign in with: Facebook" icon on the Yahoo! login screen. That's all you need; to obtain access of your Yahoo mail account.
Login to Yahoo Mail account on Mac computer
If you are an individual of Mac computer then Safari should be your web internet browser. Safari is the best surfing option for Mac OS; Safari is quick, much faster and also easy to use internet browser. You could easily access your Yahoo Mail account with it. See, how you can login with Yahoo mail account on Safari web browser. Merely open Safari and also type www.yahoomail.com; you will certainly be routed to Yahoo mail sign-in web page. To launch their brand-new "one-click" sign-in merely click the "Sign in with: Facebook". You are after that totally authorized into Yahoo!
However, an advice- you still will not have the ability to sign into a mobile or desktop customer making use of Google OpenID.
I hope this short article can aid you. Thank you ...