Google AdSense is an advertisement serving program run by Google. Website owners can enroll in this program to enable text, image, and more recently, video advertisements on their websites.
Google uses its Internet search technology to serve advertisements based on website content, the user's geographical location, and other factors. Those wanting to advertise with Google's targeted advertisement system may enroll through AdWords.
Currently, AdSense uses JavaScript code to incorporate the advertisements into a participating website. Many websites use AdSense to monetize their content. AdSense has been particularly important for delivering advertising revenue to small websites that do not have the resources for developing advertising sales programs and salespeople.
Webmasters invest significant effort into maximizing their own AdSense income and websites that are content-rich have been very successful with this advertising program, as noted in a number of publisher case studies on the AdSense website.
