Zuckerberg testimony tees up urgent questions about Internet giants and how we interact with them

The tumult in Washington over Facebook founder and CEO Mark Zuckerberg’s two days of testimony before Congress is the best opportunity yet for all of us to re-examine our relationships with the Internet giants that exert enormous influence in our society. Facebook as well as Google and the vast number of other companies that trade free services for access to our private information, now occupy a central place in too much of our daily lives.