Open Id concept is common scenario nowadays. Facebook is great example for this. Now many of world’s famous sites and service have default login available with Facebook account. Like that many services can be activated with Gmail or Google Apps login credentials. But what most of us don’t know is which all information is transfers when you give permission for any web application/service to access your Google apps/Gmail.

That’s when we all need to know information about what all our information gets transferred or can be viewable for the third part service. Even though lot of people doesn’t know Google gives us clear information about what all things are shared to third party services.

You can read the complete information here: Privacy Concerns: About the Sign in Request page.