Useful plugins for Firefox
Install Firefox

Adblock Plus

http://adblockplus.org/ru/ - official site
Install
What this programm does: Blocks all the advertisement.

Ghostery

https://addons.mozilla.org/ru/firefox/addon/ghostery/ - Site about programm.
Install
What this programm does: With this programm other people(counters) couldn't get any information from you.

NoScript

http://noscript.net/ - official site
Download
What this programm does: Blocks all the Javascripts. If there is such need, some of them could be switch on.

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