Advertisers sign up with Google and create text ads that they would like to be displayed. Google displays these ads on the results pages of searches that people conduct from Google.com. The Google AdSense program allows these advertisements to show up on pages all over the internet. To see some of the ads themselves, take a look at the sidebar on this page. The webmaster simply places a special code in their page and Google AdSense takes care of the rest. Perhaps the most valuable aspect of the system is that robots (specialized computer programs that scan internet pages) analyzes pages that ads will be placed on to determine which ads are most relevant to the page's content