They kept your shadow profile and are still tracking you, I guarantee it

The shadow profile is probably just as valuable as a real one when it comes to selling advertising.

And that's what matters. Everything else is just a cost of doing business.

There's no way it can be just as valuable.

For one, if you're not using their site, they can't show you ads there.

They don't need to. They can advertise to other members of your household, friends or any associates who they have linked that profile to.

Also you could be targeted on any site in their Advertising Network. In those cases they don't need specifics, just a profile/persona they can target or crosslink your browser fingerprint from like buttons and pixel tracking with a FaceBook user with the same IP address.

:/ yeah.

Consider obfuscating it?