You guys just deleted the promise you made about never selling our data:"Nope. Never have, never will. And we protect you from many of the advertisers who do. Firefox products are designed to protect your privacy. That’s a promise"
I thought I had done everything I could to disable this, but buried in the (new?) "Firefox Labs" settings section, I found it enabled. It feels really gross to not even just not ask, but forcibly turn this on for users.Edit: I just noticed OP's post ...