Adblock plus is a firefox addon that allows you to block ads.

If you have ever been annoyed with ads on pages, install this and many them will just disappear.

Keep in mind that if you block the ads, the content that you are consuming is not getting paid for by advertisers and you should turn it off on your favorite websites.

You will see a stop sign like button at the top of your firefox window that allows you to turn ads on or off on a site by site basis. All ads are turned off by default.

You can get Adblock Plus here: http://bit.ly/adblock2