Дополнение блокирует все неразрешённые JavaScript'ы, а значит сёрфить Интернет становится безопасней.
Плюс отключённые скрипты не загружают систему.
Простое и хорошее дополнение.

I have been using this add-on for years and absolutely cannot browse the internet without it. It also pairs will with ad block plus. Fantastic add-on that I recommend to everyone I know and same for everyone else. The only con imo is the learning curve of what to unblock and what to keep blocked, but you easily start seeing the patterns and DNs and they get remember universally on default.

I happily used this for years and it didn't work on the previous update, but now it's working again. Thank you

The only firefox extension I ever needed... A great great job!

Al fin actualizaron Firefox para que se pueda usar esta script

Couldn't surf without it!

С 04.05.2019 перестало работать. проблема подписи.

UPD 05.05.19: Mozilla team fixed the issue =)