The Google Adsense program rewards site owners by allowing them to earn money online from their existing websites. Site owners sign-up to Google's AdSense program, once they are accepted they can then place some code on their website which will allow them to generate some money. There is no need to do anything except add the code as the system will automatically pick up the site theme and will place relevant ads. You may see some of the AdSense ads on this site under 'Ads by Google'.