It means that Google uses search-based technologies to match advertisements to the content and context of web pages - so the ads you see are related to the information you are viewing. The website publishers who display Google ads on their site are part of the Google AdSense™ program. The ads come from Google's base of AdWords advertisers. These advertisers range from global brand name companies to small local businesses.

• Google AdSense - Place Google ads on your site and earn more money
• Google AdWords - Advertise with Google and drive traffic to your site
• Froogle - List your products for free on Google's shopping search engine
• Google Toolbar - Take the Google toolbar with you anywhere on the web
• Google Free Search - Add Google search to your site