essential!

Wow, this is beyond fantastic. It is easy to set up uBO for the mostly computer illiterate, but in the hands of a pro it can become even more powerful. Things like cosmetic filtering with advanced rules make it possible to programmatically block elements on sites that randomize IDs or classes, so anything is in reach. Thanks.

Should be preinstalled

yay!

Lo malo que tiene es que no posea un botón preview antes de decidir bloquear el objeto para siempre

glad firefox will support ad blockers for years to come!