48 reviews for this add-on

  • had to force quit Firefox every time I used it after installing this, at one point I couldnt even force quit Firefox, I had to force restart my computer, after I uninstalled this extension, everything went back to normal. I would touch it again with a ten foot pole.

  • This works beautifully, if only people weren't so ignorant and actually read the description!

    This addon isn't full of "trojan cookies" or "malware", etc, instead as usual, it's users being utterly clueless and not reading the addon description.

    Yes, it places hundreds of opt-out cookies to signal to various advert companies to not track you.
    If you don't want this feature, like me, simply go to addon options or the addon icon, click on 'opt-out cookies' section and select none.

    Instead, I have selected 'all' from the 'tracker block' section, which blocks all advert companies from placing tracking cookies.

    Furthermore, it also allows you to delete HTML5 storage, which can also be used to place id's, just like cookies.
    And from the 'Do Not Track' option, you can set it to clear all Flash cookies on browser exit.

    Others have also complained about perf issues, which I've never suffered from, and I have this addon installed on at least 4 machines and several firefox profiles. However, for me, ghostery and adblock plus have a profound impact on memory usage as well as browsing performance.

    Although a superb addon, it's now in desperate need of an update, as new ad companies keep popping up, which this blocker won't recognise.

  • Not only does this add-on NOT work as advertised, it is full of hundreds of cookies that cannot be deleted until you uninstall the add-on!
    Did any of the reviewers with more than one star even look at their cookies? Or did you assume they are all gone? Better check again, this add-on loads you up with more cookies than you imagined existed.
    ** !BEWARE! This is MALWARE!**

  • Revealing its effectiveness in making websites useless and not providing any help on how to solve it is quite a disappointing experience. The only link is to a plugin from avg....

    If not trackerblock is designed to help the webabusers to live on and bake there cookies...

    otherwise a whatcouldbe an excellent plugin has been hijacked..

  • firefox is blocked

    linux mageia x64

  • Blocked whole firefox from starting up again. If you look into the processes tool, you see it 's counting up the memory (I stopped it when reached over 2 GB) nothing else happens. stopping the process and restarting FF doesn't help.
    Only solution to get rid of it, deinstall FF, reinstall it again and you will be prompted to the safe browsing mode (as FF was not started or shut in the correct way). From the Add-On-page you can remove it again. close FF and restart again and you get FF back working.

    Tried on Win7 + FF 36.0.1, so not a Linux issue ... maybe it works only on Win XP?


    Warning : Do not install this addon if you want to use Firefox.

    I installed it and not it won't start.I've rebooted PC sever times, used CCleaner to clear data, tried to open FF in safe mod but it doesn't even open in Safe Mode.

    Thanks AVG for screwing up my computer.I don't understand why Mozilla hasn't removed this addon from library yet.It seems like AVG stopped supporting it long time ago anyway.

  • Didn't work. Firefox wouldn't start up.
    To start in safemode:
    Click on Start > Run

    Type the following command: firefox -safe-mode

    Once in safemode, the addon is called Privacy Choice Tracker Block. Remove it, and FF will start right up.

  • I cannot understand why this add-on is not going to be removed after that so many people report about how the add-on crashed their Firefox/System??

    I installed it (I was missing to read the comments here before...) on a fresh (!) and new installation of Ubuntu 14.04 and afterwards Firefox was not able to start anymore, just left me with a blank screen. Even after restarts of the system.
    I was just able to fix it by reinstalling Firefox multiple times afterwards and finally reset Firefox to its factory settings (without all add-ons etc).

    Do not use it! It will most probably crash your system, too. Just like so many other people report in their reviews. (see below)

  • The comments suggest that this is a bad addon. Had no problem thou, but fear for my browser stability!

  • This addon does not allow to start FF. Memory usage rocketed from usual 350 Mb up to 2,7 Gb.

    Фуфло! Грузит память в 10 раз больше обычного и не даёт запуститься Фаерфоксу. Не устанавливайте, не теряйте время!

  • As with many previous reviewers, my FF refused to load correctly once this was installed. I tried it twice, with and without other addons present & same result each time.

  • This appears to conflict with (I think) a Ghostery update. Was installed with no problems but now 100% processor usage and machine locked up so badly, had to use power button several times to shut down. Started FF in safe mode and gradually found out which add-on was the problem by trial and error. Disabled at present.

  • After installing this in my FF v24 on Windows7 and restarting, FF would never start again (in normal mode). I had to start in safe mode, disable this addon and start again. I really want to use this type of addon but this one is no good to me.

  • Major conflict with 'Ghostery' add-on. Causes memory leak type issues. After installing 'TrackerBlock' FF DOES NOT LOAD and cycles through memory.


    PrivacyChoice.org PLEASE update this much loved and utilized program!No other solution shined and just worked like TrakerBlock. :)

  • It was taking at LEAST, and I mean at LEAST, 30 seconds to fully load pages. Sometime I would see the portion of the page in my viewing window load but I would have to wait another 15 seconds for the ball to stop spinning. Then when I tried to scroll down, the ball would spin again for a long time and it would become apparent that the rest of the page (beyond what was in initial viewing window) had not loaded at all. So basically, the ball would spin frequently when I clicked on links or tried to scroll down. I knew it was an add-on that was making my computer slow because my browsing was fast before and then after adding a couple add-ons browsing was like wading through mud--I just was not getting anywhere. Luckily, I realized it was this add-on giving me the problem because I like the other two add-ons I have. The slowness of the browsing with this add-on was so bad that I made it a point to create an account on this site just so I could write a review and warn other people and let them know that if their computer is really slow it's probably because of THIS add-on. Did I mention it was tortuously slow? It was so slow I would get up and do stuff while I waited for pages to load. I haven't dealt with a browsing experience that slow since a couple years ago when I tried browsing on an old computer that I bought in 2001. That old computer has since been discarded because the browsing speed was so slow. If I hadn't figured out that this add-on was the culprit of the slow browsing, I may have thrown away this computer as well and it's only a couple years old.

  • Good, but in my FF interferes with HTTPS Everywhere 3.x/4.x

  • Found this addon to be the culprit of massive performance problems with Firefox, slowing Firefox startup a LOT, causing freezing every time loading Twitter and generally slowing browsing down.

    Going to check Ghostery out if theres less problems with it.

  • Who's watching the watchers?...I am. I've been trying to find out who's tracking me since more and more articles are showing up about surfers being tracked on the internets, and this tool is great for seeing who's tracking me with Flash and HTML5 cookies.

    I'm just starting to explore targeted ads, being tracked, and this is a good tool to see who is actually doing what on my computer.

    I don't mind generic ads (like on t.v. or newspapers) to support bloggers, etc, but tracking me to target ads is too disconcerting (and who knows what gov't agency is getting their paws in the mix) and this add-on is another way for me to surf the web more comfortably. I'm exploring the Tracker-Scan add-on along with TrackerBlock to customize my surfing. At least using this ad-on makes me feel pro-active, rather than acting like a sheeple.

  • I have mixed feelings about TrackerBlock and PrivacyChoice, the organization that makes it.

    I appreciate that from it I learned about HTML5 storage and that it allows removal of this type of information (although it seems like it can't be set to be automatic like Better Privacy does with LSOs--it's hard to tell). On the other hand, I'm skeptical of a privacy addon that seems to require me to set certain cookies to block tracking cookies. I just want to block the tracking. And I wonder in the future how those cookies themselves might be used/abused (even if this is not the initial intention). Would I notice? I'm not sure I want to have to just assume PrivacyChoice will always remain on the up and up.

    PrivacyChoice itself seems like one of those organizations that's trying to bridge the divide between users who want privacy and businesses that don't want to be completely shut out. So it provides good tools to users, but also is working with websites, perhaps in the hope of mitigating the effect of people completely blocking any and all tracking in the first place. Perhaps allowing for a sort of softer-gentler tracking in a more privacy conscious world (but tracking nonetheless). Honestly it's really hard to tell how PrivacyChoice makes it's money and what its interests really are, from their website. The ".org" domain name itself seems to hide that this must be a commercial enterprise (which I never like when ".org" is used that way). In any case, there is certainly at least an apparent conflict of interest when an organization is working both for users who want to avoid tracking and companies that want to do at least some limited tracking. And I imagine it's the people who are paying the bills that will win out, ultimately, in such a conflict of interest. As another review notes, the whole thing has a commerical feel to it. And if you search around you can see that the founder and CEO of PrivacyChoice is definitely not a privacy advocate, but a serious business person.

    In the end, I guess I prefer Better Privacy and I discovered the addon "Foundstone HTML5 Local Storage Explorer," which lets me manually view and delete HTML5 local storage.

    * * *

    Response to Reply below:

    I have no doubt that TrackerBlock is a good tool that provides some degree of privacy from tracking and puts a lot of control in the hands of the user. In fact, I'll change my rating from two to three stars, to reflect this.

    But I really don't buy the argument that you can be working for websites and developers with their own privacy tools (which has to include their decisions about how much and what they're going to track) and be working for users, without having a conflict of interest.

    Further, when you write in your response to me about your products, which include "many other free privacy tools for websites and developers," that is a very vague statement that I think occludes the sort of softer gentler tracking tactics that I mention in my initial review. This is also reflected in the sometimes difficult to parse language on the PrivacyChoice website. "Privacy tools" here appears to be used to describe tools that websites and developers use to determine how they're going to both inform users, but also track users (to at least some degree). Just as Google's new "privacy policy" has been released to great fanfare, about how it will make everything simpler for users, but is actually a statement of how Google is going to track people in an even more centralized and potentially invidious manner. This is very different from "privacy tools" for users to protect their own privacy. So the word "privacy" appears here to be used in two very different manners: the privacy policies and technologies of websites and developers (that of course includes not just how they inform you about what they track, but how much and in what manner they are going to track you) and the privacy technologies available to users to limit or block websites and developers (not necessarily only in ways that they accept). So this double use of the word "privacy" elides some important distinctions and seems to me to be misleading to potential users of TrackerBlock.

    In the end, as is always the case with conflicts of interest, if you're working for both sides, there's a conflict of interest. This is by definition what a conflict of interest is. Being relatively transparent about it or saying "trust us" (even if you've been trustworthy so far) does not mean there is no conflict of interest.

    In the case of TrackerBlock and the other tools provided by PrivacyChoice to users, the potential problem I see is not that PrivacyChoice is (or may some day be) secretly tracking people somehow. The problem is that it encourages users to use a privacy tool that potentially reduces, rather than eliminates the various ways they may be tracked. In turn, they may end up not adopting more effective tools, that are less palatable to developers and websites. All this because it's claimed to be more convenient (the carrot hung in front of the user). This is why I call it a soft gentler tracking. And this is why the "our code is open" argument is beside the point. It's a distraction from a broader strategy to get people not to use other more extreme privacy tools (a strategy which I think will become more and more common as websites have to contend with a more privacy conscious user base). Whether or not this is exactly what PrivacyChoice is up to, I don't know. But that's the sense I get from trying to read between the lines of the information provided on its website.

    And I still take issue with the use of a ".org" domain name for a commercial business. I don't see how that is not intended to obfuscate to users the nature of PrivacyChoice as a business.

    Developer response

    I understand that you need to trust add-on authors, which is why we make these things transparent:

    1. Our code is open, and you can always check which companies are blocked. You can see that it's working by checking your own cookies to see what we block. If we ever compromised operation of the add-on, it would be obvious to see.

    2. We offer permanent opt-out cookies as an option for the user because so many people asked for it. It sounds like the reviewer only wants blocking, and that's exactly what you can have.

    3. This addon controls both HTML5 local storage and Flash cookies when attempted by tracking companies. The problem with generic deletion of all Flash and HTML5 objects is that those can be useful when not used by tracking companies. Because we keep a master domain list of trackers, you can delete and block them selectively, which makes the rest of your web experience better.

    4. As we make it clear in our FAQ, we license our database for companies making other privacy applications, which allows us to support the best curated tracker list available, as well as many other free privacy tools for websites and developers. Everything we do is about making privacy easier, which we've done now for nearly 2 million people, without any conflict of interest.

  • Seems to be a pretty good extension. I can tell it's working if I see HTML 5 elements, which I then selectively clear. Otherwise I wouldn't know because I don't use the 'Opt-Out' cookies feature, only the 'Tracker Blocking'. I say "wouldn't know" because I use a Windows app to manually remove cookies and it would show/allow me to keep or remove any 'Opt-Out cookies if I used that feature. What I don't get is that the 'Tracker Blocking' list is never updated and there's no option to check for new additions even it was so I give it 3 stars. Ghostery updates (and you can manually check for Web Bug updates, AND they do occasionally update) which is one of the reasons why I give Ghostery 5 stars. Ghostery focuses on web bugs though so I'm not comparing it to TrackerBlock in that regard, just the lack of updating gripe. I do use Better Privacy as well as I have no use for LSO/Flash cookies (although I like knowing who's using them and sometimes examining them).

  • I've installed the add-on, but how do I know if it's doing anything? There should be a way to see what is being blocked. The rather sparse PrivacyWatch website promotes TrackerScan as a way to see the trackers. A link installs an add-on called TrackerWatcher (same thing?) The TrackerWatcher toolbar button opens a completely empty page.

  • Please make the setting up of this add-on a little easier for those of us who don't know much about computers. I installed TrackerBlock, clicked a "more" button and was told that I didn't need to do anything more and then clicked again and was told that a zillion tracking companies were now under my control, and was asked to check a box allowing the sending of information to TrackerBlock. What box? Where? I finally clicked the TrackerBlock symbol on Firefox and found the box with the check boxes that must be checked in order for TrackerBlock to do anything at all. I had missed, the first time around, the little "options" box at the bottom of the first page. I hadn't scrolled down because I'd had no idea that there was anything down to which to scroll. Clicking "options" displays the box with the check boxes. Those "options" are about as optional as breathing. Please make them more easily found. Once the check boxes are checked, TrackerBlock seems to work beautifully. I'm finding blank spots where I used to find annoying ads, and ads aren't popping up where I don't want them, and many pages seem to load faster. Even with the niggling complaint above, TrackerBlock rates a 5.

  • Excellent add-on - well worth using.

    Could possibly extend it by integrating it with TrackerScan, giving the user details of trackers on a web page.

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