It Google Adsense only one advertisement program which gives a good income to the publisher. It because, Compared to any other PPC programs, Only Google Adsense shows ads relevant to the contents on your webpage which enables you to achieve a good income from Google adsense.. So whenever a person came into your webpage he can see different ads related to your contents so there is a chance to get click on these ads. So you get high revenue than any other Pay Per Click programme.