Simply excellent and flexible. Only request of the developers it make a simple checkbox in this general options tab to essentially put 'about:addons' and 'about:support' and 'about:config' behind a password at all times. The workaround to protect Leechblock from being disabled (including by Firefox 'Refresh' or 'Restarting with Add-ons Disabled'/Safe Mode) requires this. I'm sure this will be addressed soon because the development team has proven very responsive by email.

Very usefull since it allows a daily buffer of time.

Very useful, light blocking plugin. Much easier to use than my previous plugin.

Doesn't work as advertised. Can't block the most basic websites (e.g. youtube.com) even following the config described here or on devs the website. Very disappointed/concerned as I gave the app significant permissions: I hope the "recommended" badge is appropriate and this is safe.

Absolutely excellent. Helps me staying productive.

5 stars if I could figure out a way to block an index site (home page) and have sub-domains not be blocked by default (manual exclusions aren't suitable if you'll want to access pages via a Google search, for example). Other than that works great.

You did a great service to humanity James! you've saved thousands of hours of mankind! I wish I could donate you but US governments restricted our access to Paypal in Iran.