Google AdSense enables you to
serve targeted ads on your websites or apps to a wide array of end
users. AdSense is used across a variety of Web products and social
networking sites like Facebook and Google Plus. You can use a small
snippet of JavaScript placed in an HTML file to serve Google AdSense ads
on your pages and apps. Google AdSense and Facebook have different
terms of service, so operating properly under both will help keep your
accounts in good standing.