Google AdSense is a program through which other sites can place Google ads on their page. Following this, every time the Google ad gets a visit/clicked on, the author site earns some revenue through Google. The content served through these ads are maintained and regulated by Google and is seen as a great way to make money online, without any investment, especially by bloggers.
AdSense takes into account the sort of traffic it will be dealing with. The ads are less intrusive and more relevant to the context of the page it is being displayed on. Therefore, it works better. It also helps small business sites in making revenue. So, when a blogger realizes that he/she has enough traffic on their page, they can simply make an account on AdSense, Google will do a follow-up on their site to see the content and the traffic and assess the worth of that site. Following this, they will accept or reject the request. If accepted, Google will place relevant ads on the page and pay the author site every time they get clicked. Since the program is maintained by Google, they make sure that their ads are appropriate, have ethical content and prevent the display of any sort of inappropriate content.
Making an Account:
Making an account on Google AdSense is a simple procedure. One must have a Google account, a website or a blog where he/she wants to place the ad. The next step is to follow the site http://google.com/adsense and click on the ‘Start’ button. Google will provide with a set of instructions to be followed and then finally accept or reject the request. This might take a few days.