Google Adsense -Earn Money
First here's a link to an online presentation by Google about AdSense - the system that lets website owners make money automatically.
How you make money with AdSense
This is entirely AUTOMATIC so if you have a content rich site with lots of traffic that is not currently making you any money, AdSense is something you should seriously consider.
AdSense is Google's syndication program for its AdWords advertisements so first up, you need to understand AdWords to make sense of AdSense.
So where does AdSense come in this?
Well, Google has taken their excellent AdWords program and extended it to non-Google web sites and branded it AdSense.