Discontinued products and services Applications that have been retired by Google, either because of integration with other Google products, or through lack of support: Google Checkout – online payment processing service provided by Google aimed at simplifying the process of paying for online purchases. Webmasters can choose to implement Google Checkout as a form of payment. Merged into Google Wallet. Aardvark – Social search utility which allows people to ask and answer questions within their social networks. It uses people's claimed expertise to match askers with good answerers. Google Answers – Online knowledge market offered by Google that allowed users to post bounties for well researched answers to their queries. Discontinued on November 28, 2006; still accessible. Audio Ads – Radio advertising program for US businesses. Rolled out on May 15, 2007 through the AdWords interface. Discontinued on February 12, 2009. Google Base – Google submissi...