Yes sure, It's really negative feedback here but the majority of users commenting there have technical knowledge as you can see in the comments and most people are only commenting when they don't like things anyway, you never have any thanks if they like things (if you ever created something used by other people, you know what I'm talking about).<p>So we can see that technical people (including me) don't like so much this feature but it does not help to know if the average user is finding it useful, I would bet on my case average users are not even using it since you need to create a separate account, but anyway, we will see.<p>And also, in my opinion, Firefox became a great product by trying new things. And as always, when you change things, sometimes it does not work, sometimes you explore in other directions, you need to experiment a bit.<p>PS: Downvoting-me does not change these facts.