where is the option page? Why a icon on the browser is not available?

Great app. Gives the option of redirecting to a different site when blocked site is encountered

Best

Absolutely does not work. I've been using it on my Android for over a year and with the latest update it wouldn't work. I uninstalled and reinstalled and got more options, but it still doesn't block anything. If I manage to add a site to the list manually you can still get to the site, but usually when I try to add a site to the list it simply won't take.

This makes it easy to block sites I find distracting, which helps me focus.

Просто работает.

100% working ... Easy to use ... But ...!!
1- This Add-on dosn't show on Tool bar
2- In order to be active and 100% efficient ... you have to type the desired website to be blocked twice
>> www.xnxx.com
>> xnxx.com
3- Your children/teens can delete blocked website (porn, action with killing , etc...)
4- You can't put password to unlock blocked websites

Doesn't allow specific urls on a site to be white listed.

Does not block anything :(

It is very useful as it can block even https sites.
Design is simple and easy to understand.

Genial/usefully

Me gusta.Hace su trabajo perfectamente. Me ha bloqueado las paginas que no deseo. Muy bien.

One of the better Add-ons I like. My only displeasure is a some has said it doesnt block pop ups even if it blocks the site. I would also like import, exports, and sync of lists along with more options but besides its good and its the best option out there. I love it and recommend it! Great Add-On.

You save my time I use it always with Social media sites .
Suggest to add short cut in right click to delete site i added quickly.

Nice and simple. Just works. The list of sites to block, reached by editing the add-on's preferences, is crowded like the 1990s Yahoo.com homepage and makes my eyes want to skip over it, so i have to sort of force myself to recall that the place to add new sites to block is just above that, but other than that cosmetic quibble this extension simply does exactly as it says — blocks sites — without the temptation of setting times that sites are available which leads to wasting time tweaking settings.

Blocks the sites you want to block and requires fewer permissions than the other site blocking extensions; simple to use.

It effectively blocks the sites instead of a different BlockSite extension I tried which failed many times. It's simple and works! :-)

SafeMode showed FF getting hit by first hijacker in many years.
The sleazy "myfirsttab.com" search settings redirect con
Immediately added it to your Block Sites along with its very long link to the adware/crapware sites:
us.search.yahoo.com/* -and- www.reimageplus.com/*
Bang, dead. At least Bing Searches are no longer sent to those intrusive Yahoo SOBs!
Now I have to waste an hour or more on a stinking Firefox refresh to hopefully purge the hijacker.
Thanks for giving us the ability to create a blacklist WITH re-redirects!
Very handy little add-on.