Are you know Google Adsense (GA, then now we call) is very essential and profitable for your content sites or blog?! There are three reason why GA is very essential.
The concept is really simple, if you think GA for it. The publisher or the webmaster inserts a java script into a certain website. Each time when the page is have been accessed, the java script will pull advertisements from the GA program. The ads that are targeted should therefore be related to the content that is contained on the web page serving the ad. If a visitor clicks on an advertisement, the GA webmaster serving the ad earns a portion of the money that the advertiser is paying the search engine for the click.
