tapirr

Question

I like Firefox's pop-up blocking, low memory usage compared to IE, etc. One thing that is stopping me is the fact that Firefox doesn't have something like a Restricted Sites zone like IE does.

Answer

Firefox allows image and cookie blocking on a per site basis. You don't
really need something like MSIE's restricted sites zone because neither
Java, nor JavaScript were given the low level system access permissions of
ActiveX. Choose your JS settings with care, and don't allow sites to install software, and you should be at least as secure as you were with MSIE locked down.

http://www.spywarepoint.com/firefox-vs-ie-restricted-sites-t37169.html

Поставьте плагин Adblock Plus (https://addons.mozilla.org/ru/firefox/addon/1865). В настройках плагина можно заблокировать любой адрес.

надстройка Adblock Plus вам в помощь.