What do you think about Google Ad sense?
 

This is about Google Ad sense that I have been hearing so much lately. Does anyone of you know what does it really give to users? Can you please tell me what this is really? All I know is that there are some ads on certain web pages and that information is what I just know. There are some advertisements that are being put up and it is free of charge Google is so strong that I think there is something that I should be aware and that includes the delivery of different pages in ad words, how do we work about with it? Can you please help me with my query?

In order to answer this question, a complete book can be written. I would suggest you to search for this in google.