[zasdffaa]

You don't answer my question, then use a vague term of 'technically work' to ensure I can't give you useful info tl;dr you don't want to be helped.

[Rygian]

I'm sorry that the correct answer to your question is vague. Such is the nature of the Internet. Not my choice, not my fault.

[zasdffaa]

If you don't specify I can't help. If marketing = 3rd party then you can block these using the hosts file at the domain level, which I do. This blocks >95% of crap cookies. A clear question gets a clear answer.

[Rygian]

Marketing cookies can be same-site or third-party.

The only entity that can specify whether a cookie is marketing-related or not is the website. No one else can.

[zasdffaa]

You're right of course but 3rd party seem to be the great majority, so blocking them is a big easy win. Also, only 3rd party cookies can track between domains/sites, so that stops that, or so I believe.