Firefox integrates an ad-blocker, but not to block ads

It's in Waterfox too, and there it does what you'd expect

Firefox 149 quietly shipped an interesting new feature buriedin the code. As Mozilla bug#2013888 documents, the browser maker incorporated Brave's Rust-based adblockengine back in March - a detail surfaced in a blog post by ShivanKaul Sahib, VP ofPrivacy and Security at Brave.

The important thing here is that although Firefox has pickedup the core Rust code that Brave uses for its internal ad-blocker,that's not what Firefox is using it for. Right now, in fact,it's disabled by default, but as a post from the officialFirefox Reddit account says:

The Firefox team is experimenting with ways to improve the built-in Enhanced Tracking Protection feature in Firefox. This is one of the libraries we're going to experiment with...Note:We are not bundling Brave's ad-blocking system, we're testing one of their open source Rust components to improve how Firefox processes tracker lists.

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