Adblock
From MozillaZine Knowledge Base
Adblock is a Mozilla and Firefox extension. It blocks graphics on pages, block graphics from ever loading, CSS files, JavaScript files, embedded frames (IFRAMEs), and Flash movies. It uses either wildcards or regular expressions to match files to block. The following is a list of example filters for Adblock.
Blocks ads in any directory called "banner", "banners", or any case insensitive equivalent:
/\Wbanners?\W/
Blocks ads in any directory called "ad", "ads", or any case insensitive equivalent:
/\Wads?\W/
Blocks ads on Yahoo!:
/yimg\.com(.*/adv/|/a[^u])(?!vision)/
To optimize your filters automatically see this site: Optimize Filters
French users see http://adblock.free.fr/