Nice tl;dr written by Nobel prize winner Al Roth: http://marketdesigner.blogspot.com/2015/03/reflections-on-pr...

Google recently put a tool called RAPPOR into production that's partially based on differentially private randomized response for collecting usage statistics about Chrome users.

Code is here: https://github.com/google/rappor Paper is here: http://static.googleusercontent.com/media/research.google.co...