Adsense is an advertising application from Google. It helps webmasters to display advertisements related to the content of their websites and make money. Adsense follows pay per click (PPC) .Pay per click means you are paid per valid click on the advertisements displayed.  If a visitor clicks on the ads displayed in your website you get paid.

There are many pay per click services available now.Prominent among them are Yahoo Publisher network, Bidvertiser, Adbrite, Miva,Oxado etc. Adsense is the leader in this segment without a second.

If you are a webmaster you can enroll as an adsense publisher by joining the adsense publisher network. If adsense is satisfied with the quality of your website it will accept your membership. Once accepted you can display text and image ads inside your website. Adsense has a great ability to deliver content related advertisements.  The advertisements come from adwords another advertisement related service from Google. Adwords is an advertisement service that helps affiliates and webmasters to promote their products online. It also follows the pay per click system whereas every valid click enriches Google’s coffers.

Google has advertisements for every topic. There are some guidelines you must follow before you apply to adsense membership. Adsense now requires you to have a website with quality original content, some amount of traffic etc. If you are a beginner your first job is to create a website with some original content and generate some traffic before you apply.

Google is the best opportunity to make money online. It is also very strict. It does not tolerate malpractices. It has a great system in place to find out invalid clicks and the next thing you may find out is “adsense account disabled” mail in your inbox. It wants give the best to both advertisers and publishers. Advertisers get quality on what they spend on adwords and publishers receive higher click rate on the advertisements clicked.