[y0ghur7_xxx]

> especially when the metrics being optimized for usually aren't in the users' best interests

I don't think so. Mozilla is not google, and apart from the mr. Robot error, that they apologized for, I am sure Mozilla is using it for making the browser better, and not to use you for targeted ads like the other browser maker does.

[SquareWheel]

When has Chrome used A/B testing for ad targeting in the past? Can you link to an example?

[commoner]

Google Chrome uses the RLZ tracking identifier for some installations.

"RLZ gives us the ability to accurately measure the success of marketing promotions and distribution partnerships in order to meet our contractual and financial obligations."

https://blog.chromium.org/2010/06/in-open-for-rlz.html

[SquareWheel]

While not exactly A/B testing as discussed above, that's still a relevant link. Thank you for sharing.

[commoner]

No problem. There's more information in the Google Chrome Privacy Whitepaper:

https://www.google.com/intl/en/chrome/privacy/whitepaper.htm...