Don Marti

Thank you, @evanp -- there is now a discussion thread open for opt-out preference signals, here: https://socialhub.activitypub.rocks/t/fep-5e53-opt-out-preference-signals/4323

If a third party has the EFF DNT policy in place, then Privacy Badger will automatically pass its ads. (Privacy Badger does not block 1st-party ads.) https://www.eff.org/dnt-policy

Some other mainstream browser vendors have not announced implementation plans, but they have not committed to _not_ doing FLoC either. ([Source](https://www.theverge.com/2021/4/16/22387492/google-floc-ad-tech-privacy-browsers-brave-vivaldi-edge-mozilla-chrome-safari)) Web advertising is generally placed through a real-time bidding...

The opt out HTTP response header will prevent your site from being used for FLoC training even if a script on the page does call `document.interestCohort`. This may be useful...

In the current implementation, browser extensions can read or send the cohort by injecting a script into the page. If the cohort is not exposed to JavaScript on the page,...

Welcome to the web advertising version of the [Trolley Problem](https://philosophynow.org/issues/116/Could_There_Be_A_Solution_To_The_Trolley_Problem). Flipping the FLoC switch will divert some "trolley cars" (ad money and, following it, ad-supported content) from the legit web...

A related issue is https://github.com/WICG/floc/issues/27. I agree with @michaelkleber that it is important for any interest group or cohort to be trained only on activity where there is both an...

[Ad Topics Hints](https://github.com/privacycg/proposals/issues/26) is a possible use case for extension-supplied cohorts. > One possible approach would be to make this API “pluggable”. Such browser plugins would need to be reviewed...

The extension may end up with a set of privacy properties different from the browser defaults. Different users have [different sets of preferences](https://yougov.co.uk/topics/consumer/articles-reports/2018/03/26/targeting-personalised-ads-right-audience) regarding willingness to trade information for personalization....

How would you opt out if your site is on a shared hosting service where you can't set the headers in HTTP? Is the correct HTML going to be: ```...