i added this in response to a comment on the Making money from your website article and thought it was worth an article of its own.
How much do I make off Google Adsense?
Google adsense terms of service dont allow me to disclose how much i make from adsense. I can talk in more general terms however - the amount you will make per click through is hugely variable depending on the content of your site and therefore the content of the ad and its CPC (cost per click). A 1% click through rate is achievable, as is $0.50 a click. So, if you serve 1000 pages a day, there is a pretty good chance you will make enough to buy yourself a bottle of Asahi or other decent beer at a reasonably priced bar.