Puntuado con 5 de 5 estrellas
I have had this installed since I discovered Firefox about a year ago. So seamless you aren't even aware it is blocking most of the time.Try it on Facebook first with and then without Adblock and you'll see what I mean.
As a side note-To be honest, I am not well versed in "computerese" so I don't mess with the filters. If I find that a website I trust is being slowed, I disable.
For those who DO understand file types, scripts, etc, it is hugely customizable.