Earlier quoted context omitted.
You mean like the "do not track" request header? https://en.wikipedia.org/wiki/Do_Not_Track It never ceases to amaze me the number of companies that "value" my privacy but still somehow ignore the do not track header.
Well, Microsoft kinda dropped the ball on that one by making it the default (although they later changed that).
I also find the idea of secret shadow profiles to slightly immoral for the same reason.