Google Adsense Time

Has anyone benefited from Google AdSense, Is it a waste of time or is it really?
Please tell me your experiences and your pros and cons of Google Adsense, and how to increase traffic on the site? How you can earn on average per month? Detailed answers please.
I earn about $ 110 per month and it is very possible. All you need is traffic, a good niche and a willingness work! http://www.adsenseuniverse.com
Part Time Job Opportunity – GDI SpiderWeb
