I think even browsers such as Firefox should begin to offer an easily accessible adblock button. But instead of being enabled by default, it should be off by de

I think even browsers such as Firefox should begin to offer an easily accessible adblock button. But instead of being enabled by default, it should be off by default for all websites. If the users are annoyed with a site's ads, then they can click to block them, and the preference is saved permanently until the user unblocks that site again. I believe this is exactly what Opera does now. Third-party tracking protection should be enabled by default.