Blocking facebook's Like button in firefox [closed]

Many sites today use widgets from facebook such as the Like button, list of friends who are fans of that site and so on. While it may be a nice feature, I perceive it to be a serious privacy intrusion, because facebook most likely stores information about which sites you visit.

I also heard that when you are not logged into facebook, it still tracks the sites you visit (probably with a cookie) and once you log in attaches the data to your real account.

For now, I want to keep using facebook, but I would like to block just these widgets so it can't track me. Is there any Firefox extension which could do that?

You can also use Adblock Plus to block these items, just add the following two lines to the Adblock rules:

http://www.facebook.com/external/*

http://www.facebook.com/plugins/*

Block other:

Google plus: https://apis.google.com/js/plusone.js
Tweet http://platform.twitter.com/widgets/tweet_button.html

You can use a GreaseMonkey script to remove Facebook Like buttons from any webpages. You can install the script from the following link: Remove Facebook Like buttons.