If others know more about us, we know more about them
From a Guardian article on Twitter Joke Trial:
The utilitarian philosopher Peter Singer says we should welcome the exponential increase in the possibilities for surveillance. If others know more about us, we know more about them. We will move to a free and open society. We will be less ashamed of our secrets and less censorious of our neighbours. Disclosure will bring the greatest happiness to the greatest number.
That or people will tend to lie even more than they do now.
This only works if it’s not just symmetric for people, but also for corporations and governments.