Great extension for dealing with distracting sites!
Personally, it has helped me boost my productivity by being able to concentrate on work.
Please don't make it easy to uninstall this extension

It helped me so much thank you
Also for one complaining its easy to turn off, put very hard code and then you can't turn it off

I've just created a Firefox account with the only purpose of writing this five stars review. This add-on is everything you need.

Has helped me a lot in increasing my productivity and lowering my addiction, great extension.

It's great.

I use against bad habit, time consuming websites. Simple and effective! Thank you for all contributors

Great add-ons!

I was struggling with managing my time online. And this extension helps me a lot doing just that. Thank you.

An amazing tool to boost your productivity. Also simple to use =)

The user experience is technical and can be confusing at first, but it has all the features you could need.

My God, I hate the access codes so much. It's perfect, thank you so much!!

Has every feature you can think off. Super glad I've got it. Not sure if I'm doing it wrong but it would be great to be able to set a block past midnight (2000-0200) for example. cheers for making this free.

Doubled my productivity

I like the feature: " Enter a time limit after which to block these sites (optional): "

This single extension helped me go from a 2.4 GPA student to a 4.0 and top of my college class in Statistics, Computer Science, and Math!

Es una aplicación sencilla pero muy eficiente, hace lo que se supone que debe hacer de una forma fácil y sencilla. Si me ha ayudado a concentrarme, creía que iba a ser inutil pero si me ayudó.