RAPPOR (Randomized Aggregatable Privacy-Preserving Ordinal Response) is a new state-of-the-art, privacy-preserving way to learn software statistics that we can use to better safeguard our users security, find bugs, and improve the overall user experience. The guarantees of differential privacy have almost never been used in practice despite intense research in academia. Google is making it freely available for all to use in Chrome and making it a standalone open-source project so that anybody can inspect test its reporting and analysis mechanisms.”]
Source: https://security.googleblog.com/2014/10/learning-statistics-with-privacy-aided.html