Less ads – more choice! Follow your Twitter and Facebook friends, see weather forecasts and interesting news instead of watching the ads! Adlesse substitutes all the annoying banners for useful widgets of the same size.
Here are more details about this add-on from the developers:
Also it fills ad space with latest tweets from your friends on your Facebook page and results from Bing, Wiki and Twitter on the Google search page.
Unlike other ad filters (such as Adblock) Adlesse doesn’t prevent the ads from being loaded, but hides them. With only one click you can see the ad hidden under any particular widget. It protects you from losing access to the important parts of the page (such as flash games) by mistake. Also unlike AdBlock Adlesse doesn’t block non-intrusive text ads (such as text AdChoices by Google) that most people find helpful.
Find out more about Adlesse from the Firefox Add-ons website.