I've been using Adsense for about 2 years now and I make about $400.00 per month. I would recommend using it to anyone. To get the best results, you have to make the ads highly visible and make them blend with the rest of the links and content on your site. Don't leave them gray and white or some color combination that doesn't match because you'll never get clicks that way.

The fact of the matter is that lots of people click them because they think it's a link to content within your site. Yeah, it's a bit deceptive, but you make money for every click and all they have to do is hit the back button to get back to your site and Google allows it.