Great! Rated 5 out of 5 stars

Great! For the Future: hoping for a version compatible to multiprocess FF (e10s)...

Whats the point? Rated 2 out of 5 stars

I like the idea but just having an addon with that name installed will almost certainly raise some eyebrows.

Right Click Not Working Rated 3 out of 5 stars

Right clicking on a URL does not work. It must be entered manually.

Rated 1 out of 5 stars

Doesn't work at all for me.

Could be much better. Rated 3 out of 5 stars

An add-on that is constricting. Could be improved by letting the user freely edit the list of Blocked sites, password protecting the same. Also, a toolbar button should be optional.

Rated 5 out of 5 stars

last update 2011. so R.I.P. I guess... Mozilla should have added something like this instead of creating all the nonsence bloat that they keep adding these days...

Rated 3 out of 5 stars

Excellent add-on, but really need to turn off or drop the "block this" button... I mean, I close the tab, someone comes in, we start using the computer and he/she sees the block this button and ask what is it... kinda "raises some flags" I think.

Rated 4 out of 5 stars

It would very helpful to be able to see the black-listed sites. In a way, this partially defeats the purpose of hiding where you go. Perhaps the feature could be password protected?

Rated 5 out of 5 stars

Great! a must-have

Rated 5 out of 5 stars

Great, thank you.

Rated 4 out of 5 stars

Great application. However i was wondering if a mode could be added that blocks websites from history, but keeps their cookies?

Rated 3 out of 5 stars

I'm really missing some options window, where I can see / manage all blocked domains. Maybe there could also be an option to show / hide the "Block this!" entry. If needed, the list could be protected by password, so not everyone can see or change.

Misbehaviour for some scenarios Rated 4 out of 5 stars

It seems the addon get confused for some scenarios:

1) I have blocked "" by accessing Gmail and using the "Block This!" context menu option. That alone works great.

2) Apparently, other * domais also got blocked. Tested with and They don't show on Recently Closed Tabs nor History.

Also, I have tested this scneario with others sub-domains (, with same results.

I don't know why, but it seems the extension somehow add two hash entries when you add only one URL. Ex. when I block (and only that one) I could see two entries on "extensions.historyblock.stringpref":

baea954b95731c68ae6e45bd1e252eb4560cdc45 - hash for
da39a3ee5e6b4b0d3255bfef95601890afd80709 - hash for "empty string"

So, I cleaned that registry, went to, calculated the SHA-1 hash from and entered that value (1fe099df5f46e4c3c7e8ff6d5a72f695a06acad4) on the registry.
Apparently is working great now.

My Privacy Is No Longer A Chore Rated 4 out of 5 stars

Forget the hassle of "Private Browsing Mode" hiding your non-private tabs when you turn it on. Most of the time, HistoryBlock is even better than Chrome's Incognito Window.

All it takes is just take a few minutes, once, to play around with your AwesomeBar, find all the sites that might leave incriminating traces, and then you can sit back and browse without worrying about whether you remembered to switch to Private.

HistoryBlock is "always use private browsing mode" on a per-site basis, in effect if not in implementation. It's not perfect yet (It won't prevent dirty search keywords from showing up in the form field memory and it won't tell Flash that you're in private mode) but it's very close.

Rated 2 out of 5 stars

Good idea, but we need to be able to SEE the black and whitelists. Else how can we remember which sites we have blocked?

Nice, but enhancement proposed Rated 4 out of 5 stars

Nice, but a bit too strong for my usage, and without return. I've blacklisted sites like google that fill my history, but it filter out the cookies too... same for gmail, and other mails.
maybe you could put a mode where there is trace of the filtered_out sites, and especially cookies.
another mode could be the "training mode" where you whitelist all sites used during it is active...

I'll also add another demand : to have a "unblock this" button if a site is blocked (or anyway). also have a block all domain (if navigation on, would block or unblock all

last is blocking IP ranges...

so here is my proposal summarized :
- have a "learning mode" to unblock all that you do when the mode is active
- have a "trace mode" that list history and cookies blocked
- have a unblock-this menu/button
- have a "unblock/block all domain" to block/unblock base domain ( instead of just
- have IP grange blocking/unblocking

anyway, already very nice.

Rated 5 out of 5 stars

Not working with FF13. This is one of my most essential add-ons please fix it.

OK so I rolled back to FF12 and then upgraded back to FF13 and now it seems to work fine.

Re: Not working with FF13

I have FF13 and it is working fine.

Rated 5 out of 5 stars

Well done. Maybe no-restart version?

Rated 5 out of 5 stars

thanks! this is exactly what i was looking for.

Good job! Rated 5 out of 5 stars

This extension is what i look for.
Very thanks.