What Is Adsense

Goggles AdSense is probably the easiest and quickest way to generate income from a website which contains a decent amount of quality content.

You can see an example of Google AdSense in the side panel of this page. You'll see "Ads by Google" followed by boxes with a few ad lines and a url to visit if the subject is of interest to you. The ads themselves are called "Google AdWords," the term Adsense is the name of the program which allows publishers to place these ads on a web page.

Below is Googles own definition of Adsense

" Google AdSense is a fast and easy way for website publishers of all sizes to
display relevant, unobtrusive Google ads on their websites' content pages and
earn money. Because the ads are related to what your users are looking for on
your site, you'll finally have a way to both monetize and enhance your content
pages."The program is free, and combines pay-per-click and pay-per-impression
advertising - meaning you get paid for valid clicks on the ads on your site or
search results pages as well as impressions on your content pages"

When you apply Google Adsense to your web page or blog, the "spiders" crawl your page and intelligently select appropriate ads to display based on your content . The amount of revenue generated depends on the amount of click throughs you have and the price per click the publisher paid for that ad.

This is a free to use tool which is very much worth having. Depending on your niche, the cost to publishers can be quite high and, as you are paid a percentage of what they paid for the ad, you can generate a decent income if you have a reasonable amount of traffic to your site.