[lxt]

Selling user data would be completely against our mission and values, and I think it would be extraordinarily hard for such a change to make it through the internal immune system for such things. I think Mozilla is less likely to do bad things with your data than just about any other company (or government for that matter) out there.

(Disclosure: I work for Mozilla. I am helping write an updated set of privacy guidelines for engineering teams, to be as explicit as possible about how careful and respectful we need to be with data.)