I don't believe that this has anything to do with extra security. What it does allow for is the site to detect whether your account is associated with a single sign on provider. Then, you get redirected to your provider instead of being asked for your password.
My colleague Kelley did a great write up on why the username and password might be on different pages in which she discusses the security implications as well as other interface considerations. Hopefully that clears things up a bit.
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
I don't believe that this has anything to do with extra security. What it does allow for is the site to detect whether your account is associated with a single sign on provider. Then, you get redirected to your provider instead of being asked for your password.
My colleague Kelley did a great write up on why the username and password might be on different pages in which she discusses the security implications as well as other interface considerations. Hopefully that clears things up a bit.