It has helped me to block unwanted sites, but it would be great to eliminate the register that causes its autostart is annoying having the display that tells you how many times the site is trying to activate itself, but is a good Addon. :-)

The best

THANK YOU! my computer is infected by redirecting ads malware and i have tried many times to remove those malwares but it was failed...so maybe the possible way is by re-installing my computer...but then my family member installed this BlockSite plugin and it successfully blocked the redirecting ads page! thanks ! God bless you

Elegant and effective

verry good addon. cheerzz!

superb extension to stop my sister's madness about playing games online!!

Hope soon export feature will be fixed (not working on firefox 57 - ubuntu 16.04)

just one word:good!

Extension works perfectly and it's a good option for parental guidance. Thank you.

Easy to use

best block any site which we you choose...
also have a pop up menu from where you can block site after clicking right button on that site link or button

Great extension, does what it says

it works . i was being tortured by constant redirects .most not connecting just flashing .no more