This addon is really works, it blocks definitely bad sites, and goods sites never are blocked. Thank you very much!

It blocked all websites - not only the ones on my blacklist and the ones you would think were a problem. But ALL websites! Including addons.mozilla.org (it's own webpage) - Can that be rigtht?

It is fast and no any overhead. I use it more than half year and I have tried other available extensions before. I can say that it blocks sites better than all other tools I have tested. Perfect for protecting children from any unwanted internet sites.

Thanks!

You have to enter every little website you want to visit into the "white list" because it will block everything else regardless of your requested settings.

exactly what i was looking for, good job!

The best ADDON every time Das beste addon was ich je gesehen habe Thank you Danke

Genial