Sortly, AdSense ads service own by google, where websites owner can place that ads on their websites and get additional earning. The ads which is displayed has various kinds, can as texts, images, even the videos: but exactly, those all use contextual system, where the ads will relevan or following the page contents where ads is placed. Look the following figure:

All of ads setting hosted on googleself server, so, we dont need provide any space on our server for adsense, or upload some files. Just insert javascript code which is given to our websites pages and we will see adsense ads displaying in our websites.
How we get the money?
Such as said above, just plug adsense ads in their websites, the websites owner get opportunity for get additional earning. How is the way?
Not difficult. The thing to do, as website owner, are waiting (and praying) in order to there are visitors clicking the ads. Yes, just enaugh to clicking the ads, aoutomatic you, as adsense publisher, will get some amount of money in your adsense account which the amount will you get is some share earn may depend on the high of ads bid that determined by advertiser. eventhough there are some factors may be influencing , commonly, share earning whichis gotten publisher is 20% of bid value.
After you registered google adsense and approved, you will get access to google adsense member area. there, beside provided tool to generate ads code needed, also there is report page that displaying your earning and amount of click you got, amount of ads display, and another important infos.
How are we paid?
Payment will be done 30 days after total earning in a mounth reaching to $100. So if in this march you got $100, your earning will be sent on the end of april. The payment will be sent by ceck using pos delivery or DHL.
How the potential?
Unlimit! Many adsense publisher who have gotten thousand of dollars per month. This is not bizzare thing now.
April 9th, 2008 at 11:12 am
I am not sure that I can completely understand your comments. Would you be so kind as to expand on your reasoning a little more before I comment.