pornhub.com対策として使えるかもしれないaddon二種類

Redirect Control
https://addons.mozilla.org/en-US/firefox/addon/redirect-control/?src=search
Popup Blocker (strict)
https://addons.mozilla.org/en-US/firefox/addon/popup-blocker/?src=search

その他のredirect関連addon
Redirect Bypasser
https://addons.mozilla.org/en-US/firefox/addon/redirectbypasser/?src=search
Redirector
https://addons.mozilla.org/en-US/firefox/addon/redirector/?src=search

popup関連addon
Popup Blocker Ultimate
https://addons.mozilla.org/en-US/firefox/addon/popup-blocker-ultimate/?src=search

暇人がいたら、能力を検証してくれ