This Firefox add-on is pretty good! Ignore those people who are saying, "It doesn't work." I used this Add-on on Firefox so I could fasten. I promised that I would quit YouTube until Lent is finished. So this really helped me keep my promise!

Much more simplier UI, than other blockers. Really nice, helpful.

好用

The extension works great! took a bit to get used to but after messing around, I was able to get the customize the rules to my need. One thing I would like is a way to block some sites all the time and some on a schedule.

Works as it should!

Works just fine for me. Simple and effective, and the "close" option is great. Leaves me staring at my desktop, wondering why I tried to open reddit for the 50th time this hour.

simplistic design. Easy to block and unblock sites.

it does its job, and does it well enough. i've been using it for over 6 months now.

Extension qui vous rendra productive en bloquant toute distraction.
Incroyable.

Very easy to use, toggle it on or off like any other extension. Good to stay focused when specific sites are an issue.

So useful it is !
I used to surf the Internet and waste much time on it, so that I was concerned about my ability to control my time well.
After finding it,I started to lock some websites in order that I could focus on my current task instead of disatracting.It is the extension that I would appriciate a lot.
However,perhaps due to not being familiar with it,it is troublesome to set up some functions.
All in all,it is a very useful extension.I like it.