Terms of use and privacy changes for Firefox

Firefox will always continue to add new features, improve existing
ones, and test new ideas. We remain dedicated to making Firefox
open source, but we believe that doing so along with an official
Terms of Use will give you more transparency over your rights and
permissions as you use Firefox. And actually asking you to
acknowledge it is an important step, so we're making it a part of
the standard product experience starting in early March for new
users and later this year for existing ones.

Specifically, the apparent
removal of a promise to not sell users' personal data has drawn
attention.