You can make money from Google AdSense by hosting
Ads
Link Units
Google WebSearch
Google WebSearch+SiteSearch
Google Referral Links
Ads
Display ads that it deems relevant to the content of the page.
Link Units
Display a list of topics that Google deems relevant to the content of the page.
A page of related ads is displayed when a user clicks on a topic.
WebSearch
Provide web search […]