Ever wondered what is Google accounts service login? This is a simple login service by Google that allows us to use all Google services with one login.
Whenever we login to Google’s any site like youtube, Adsense, Orkut it redirect us to Google accounts service login where Google store a cookie in our PC so we can use all sevices. If we are logged in at Gmail and open Orkut or webmaster tools then we don’t need to login again.
Thanks Google for this.