Adblock Plus automatically blocks pesky online ads in Firefox based on their source URL. You can easily turn it off or tell it to display ads when you visit certain sites.
Note: This link takes you to the vendor's site, where you can automatically install the file into your browser.
--Erik Larkin
For more information on many great Firefox and Internet Explorer add-ons, see our Build the
Perfect Browser feature.
IE AdBlock is small and unobtrusive, and does a decent job removing many, but not all pop-ups, banner ads, and other annoyances; unfortunately, it doesn't know how to handle Flash ads.