This delaying mechanism is brilliant, and helps me focus my work on more importatnt things, but please, please add an easier method to customize the blacklist than the one outlined below. A big hand to Crystal for decoding that bit!

Rated 4 out of 5 stars

Its a great add on for procrastinators but its hard to customize the sites it does/doesn't blacklist. I see a lot of people having that issue so here's how to do it. (I had to ask about this in the support area. Credit for the solution goes to cor-el)

First click the Help button at the top of your Firefox browser. Click troubleshoot, then Show Folder in the window that appears. (Linux: Open Directory; Mac: Show in Finder)

In the folder that opens up there's a few possibilities for what you need to do next. You will either need to find a file labeled "delaysites-0.3.rev97.3.1-fx.xpi file" or " jid0-sTMoUXNNDmMz5gHkMrGC3RV8CKU@jetpack" (I will refer to this as a zipped program/files/folder from here on out).

I needed to find the second one. You will need a program to unzip or otherwise edit the zipped files. 7zip is a pretty good one.

Make sure you can see hidden files (

Alright. Open up the zipped file with your unzipping tool, or you can copy that file, place it in a new folder, and unzip it there so you can edit it.

Whatever the case, Go to resources, then alexichr-1, and then lib. Inside the lib folder should be a file labeled main.js. Open that with notepad or something similar and you should see something like this:

var pageMod = require("page-mod");
var tabs = require("tabs");
const data = require("self").data;

include: ["*","*","*","*","*","*","*"],
contentScriptWhen: 'ready',
contentScriptFile: data.url("blocker.js"),

Here you can remove, edit, or add websites, but you have to stay within the format provided. So for example. If I want to blacklist Tumblr I would add


after the comma behind the twitter one. If I wanted to remove facebook I'd just delete:

Once you finish, save. If you edited it within the zipped folder you are done. If you unzipped it just copy the newly edited main.js and paste it into the zipped folder. (Make sure you delete the original main.js of course, or overwrite it).

If you folder won't let you do that, like mine won't, you can get around this by opening it up, deleting the file, and then dragging the new file in, all while its still zipped.

If you can't edit zipped files you could always zip everything back up but I am not savvy enough to explain how to do that.

Also I'm not a help expert. If you have questions on the specifics or this isn't working for you I suggest you ask on the Mozilla support page. I just wanted to provide a more quick solution for peeps like myself who can figure it out with enough nudging in the right direction.

I like it Rated 4 out of 5 stars

I did not work for a site, which I opened a minute earlier

This review is for a previous version of the add-on (0.3.rev97.3.1-signed.1-signed). 

How do I add/remove blocked websites from the list? Rated 5 out of 5 stars

Cool extension! :) But it also blocks Wikipedia, etc. And lets open some other time-wasting websites. How can I edit the list of the blocked websites?Regards.

This review is for a previous version of the add-on (0.3.rev97.3.1-signed.1-signed). 

Rated 4 out of 5 stars

Great add-on! Works very well, but lacks customization (it's beta now). I edited the hardcoded list of websites and it helped me a lot.

This review is for a previous version of the add-on (0.3.rev97.3.1-signed.1-signed). 

Rated 4 out of 5 stars

Works well for the hardcoded sites(reddit, facebook, etc).
Not a major pain to edit the list(it's in main.js), but to gain more users a more user friendly way would be most welcome. :)

This review is for a previous version of the add-on (0.3.rev97.2.1-signed.1-signed).