Not Enough Ads? Install Adbar.

An anonymous reader writes "Jesse Ruderman brings the worst feature of Opera, Advertisements, to Firefox with his extension Adbar. According to the page, 'adbar displays Google ads related to pages you view. Because the ads are relevant, they are occasionally useful. When adbar isn't displaying ads from Google, it displays Firefox-related things such as silly Firefox slogans, ads for other Mozilla software, and requests for donations to the Mozilla Foundation.'"