Good looking, simple and easy to use add-on to block websites. The funny notes each time you get blocked makes it better.

But there 's a bug, it won't block the blocked site if you open it in new window.

Will update my review if there's any new necessary experience. Will give 5 stars for now.

Smart, beautiful and lovely design and functions)

Just by installing the extension and setting a specific blacklist rule in a new browser window, I could block a stupid-ass scammer website that denied me all access to my browser, without needing to close all tabs in my first browser window. Very nice!

Facil de usar y ofectiva

Doesn't do shit! I mean, it really is not working for even the simplest cases. What is this?

It has a very serious bug for the whitelist setting. It only works on the first window. It doesn't block ANYTHING when a new window is opened. That being said, everything work perfectly on the first window. Fix that bug then we can use it for our school computers. I need to only allow access to the URL(s) for our tests.

I would love it to be able to sync the blocklist.

It takes 1 full second after the site will be blocked. Its useless when sites redirect you.

easy, simple and doesn't eat my memory.
'Nuff said!

It used to allow wildcards.

lets me block exactly what I want and nothing else.

Much worse than previous releases. It does a very poor job blocking sites. I am looking for another blocker. It used to work but now very ineffective. Letting a lot of sites I thought I had blocked through. Wildcards are no longer allowed so all the offending site has to do is make a small change and it gets through.

BLOCKS ALMOST NOTHING!!!

Blocking in the new version for FF 57 does not work in many cases. E.g. I have this file blocked and yet it is loaded. Before all worked as expected.
apps.[removed].sk/[removed]/js/jquery-1.11.1.min.js

Old version was very useful, the new one is useless.

Good

If you open up a second firefox window then on this window the sites are not blocked anymore