[candiddevmike]

If you can edit/set these, what's the point in having any of this? If they want to know your interests they could just ask and accept no as a valid answer. The iOS changes proved that people do not want to be tracked, I think.

[GordonS]

The point would be standardisation - you set preferences once in your browser, rather than on several sites in several different ways.

FWIW, I too do not want to be tracked, and so I use an ad blocker etc. I'm thinking more along the lines of improving things for those that don't mind so much - those that accept the "deal" of ads in exchange for content.