None? https://addons.mozilla.org/en-US/firefox/tag/hacker%20news https://addons.mozilla.org/en-US/firefox/tag/hacker%20news https://addons.mozilla.org/en-US/f

None? https://addons.mozilla.org/en-US/firefox/tag/hacker%20news https://addons.mozilla.org/en-US/firefox/tag/hacker%20news https://addons.mozilla.org/en-US/firefox/tag/hackernews https://addons.mozilla.org/en-US/firefox/tag/hackernews https://addons.mozilla.org/en-US/firefox/addon/hn-utility-suite/ https://addons.mozilla.org/en-US/firefox/addon/hn-utility-su... Or do you mean "none" is some other way?