better than uBlock Origin

Everything is fine, but ads in the kinopoisk.ru (one of the most popular RuNet sites) is not blocked. Never. It is very annoying.

An excellent free ad-blocking extension that I’ve been using for a long time; it effectively blocks pre-roll ads on major Chinese streaming sites (Youku, iQIYI, Tencent Video) without triggering those annoying black-screen countdowns. However, it seems Mozilla has bowed to pressure from domestic advertisers and blocked access to the pages for ad-blocking extensions like this one. This raises the barrier to entry for Firefox and makes the browser less user-friendly for those of us in China.

This addon breaks a lot of sites and requires too much manual configuration for the average/novice user. Good if you like to configure based on preferences and you are able to, otherwise not so great.