Last year Yahoo started using Bing to power its search engine and this year they have announced that they will be accepting Google and Facebook account logins via the OpenID authentication protocol. Yahoo! says that this will make it easier for users to access their services without the need to sign up.
The new OpenID authentication system starts tomorrow. I wonder if we will see much more of Yahoo, since this doesn’t look good for them. They wish that others would be accepting their logins instead.