It is a good and useful add-on with some minor problems (edited after contacted by support):
- the blacklist disappear after every auto update (so I suggest anyone with this problem to turn off the auto update from the add-on page and backup the list before manual update).
- the blocked sites/pages are still opening/loading in the background tabs/ windows and you still can see their preview in toolbar (in Win 7), see their name and hear any background sound/music they have set on autoplay. Only when you click that specific tab/Firefox window it trigger the block and the page become blocked.
- it really need a very basic feature to instant close the blocked sites tabs. There is no point in keeping those tabs open especially when often their number become really annoying.
My Firefox is v62.0.2 (64bit) and this problems could affect only this version.

Firefox user
adult.yourblocksite.com only appears when this app is running "WHY" I thought this ap was to help us stop going to sites like this.
How do I stop this , other than disabling BlockSite.
Thank you for your time

its the best website blocker in firefox .

Malware Bytes constantly informs me it has blocked a Trojan "adult.yourblocksite.com" whenver I have this add on running.

Why would you make an extension that blocks sites then gives you the option to "edit your list" right on the top of the page? Trying to keep my son on task with school but it's pretty useless if he can disable it in 5 seconds.

Absolutely disgusting practices. For the adult content blocker you need to let them *gather* (steal) YOUR information on your visited sites, your IP ADDRESS, and other information regarding your operating system and browser information for WHAT EXACTLY? A global blacklist of sites that are known to host NSFW material? THIS IS COMPLETELY UNNECESSARY FOR THEM TO DO THIS. These people are trying to take your data and act like they can be responsible with it and are blatantly lying about the reasons for why they need it. DO NOT TRUST ANYONE. Especially some unknown little addon developer. They will screw up and this info will get out there. Please consider using any other tool!

Unusefull. Doesn't block anything !

i use it to block pop ups. starts popping up its self every time i open firefox. NO AND NEVER. stop asking for permission.

Funciono perfecto, esas paginas maliciosas que se instalan como principales y no podes borrarlas de ninguna manera, al menos quedan bloqueadas.

It works as promised. No problems. Helps with procrastination.

Works great! Splash pages really got me laughing as well, lol.

Great add-on for blocking malicious sites. Thanks for the bug fix!

Nice addon. Helps me avoiding some crappy site that "offer" me to download software I can get directly from develper's home page.

Unfortunately, it has recently gone freemium, and the free version now allows only 6 entries in the block list.
Not a big problem for me, since I'm currently blocking only 2-3 domains: however, if my needs will change, I think I'll consider anothe option,after all there's plenty of alternatives around.

Good tool that helps reduce procrastination. Other than a hiccup it works as desired.

Perfect - Only problem, doesn't work in Incognito mode.

Bloody awful. I did not request it and it is throwing up authorization requests all the time. Have emailed support to help get rid of this really annoying pop up.

It seems to do ALMOST everything I need it to. The one drawback is that the work mode timer seems to only work in 25 minute intervals. I work better in 60-90+ minute intervals.

I do appreciate that the developer seems to address such matters on the review pages. Perhaps there's a fix I haven't discovered yet.

Absolutely terrible. If you decide not to let blocksite collect your information, it will keep coming up with a popup add to try and convince you to do so. After about 10 interruptions to my browsing by the makers of this wretched thing, I decided enough was enough. Do yourself a favor and just don't do it. The authors apparently know no shame.