This is opt-in, and a rather hard-to-mistakenly-enable kind of opt-in that I personally think is consistent with their great™ privacy by default stance Brave o

This is opt-in, and a rather hard-to-mistakenly-enable kind of opt-in that I personally think is consistent with their great™ privacy by default stance Brave offers a simple deal: if you believe or have audited their technical claims, you give them fully anonymized snippets of URLs and web pages, and they improve their search index for everyone