What is Google Adsense?

Adsense is an advertising program run by Google that allows the businesses to run their advertisements on the websites of the publishers who participate in the program. Website owners can enroll in the Adsense program and opt to display the text, image and video ads on their websites that are related to the content of their websites. Google takes care of administering their ads and generate revenue for the publishers on either a per-click or per-thousand-impressions basis.

 Web masters use several ways to monitise their websites and blogs. Some of them are: 

They use a wide range of traffic generating techniques including but not limited to online advertising.

They build valuable content on their sites which attracts AdSense ads which pay out the most when they get clicked.

They use various techniques on their websites that encourage clicks on ads. However, Google prohibits people from using phrases like "Click on my AdSense ads" to increase click rates. Phrases accepted are "Sponsored Links" and "Advertisements".