Google is the number 1 company in the world. It has introduced many products and services to its users. In this list, one of the main service is Google+. Now G+ has became the leading social network. Everyday Google is introducing many new features on Google+ to attract it's users. Recently it launched Google+ Sign in feature. By using this feature users can sign into third party websites and apps with Google+ account. So hereafter you don't need to create a new account on third party websites. Simply you can sign-in with your Google+ account.