Is there any loss of privacy while using 2 Factor authentication?
If you use Google Authenticator on an android phone (where essentially you have linked your google id), to authenticate the login of a third party website, can google link your google id with the credentials of the third party website?
I have put my trust in the second authentication fact. I am already using it from some time and i had no issues with it and i am confident in the Google's confidential politics.