> In the coming months, we will start testing these protections with small groups of users and will continue to work with Disconnect to improve and expand the s

> In the coming months, we will start testing these protections with small groups of users and will continue to work with Disconnect to improve and expand the set of domains blocked by Firefox. We plan to enable these protections by default for all Firefox users in a future release. Default settings can move the industry in a way that opt-in things like uMatrix generally don't. (Disclosure: I work on ads at Google)