i have adsense on my blog as you can see... i never had a single click on it... not a penny... but i do not care... Google crawl my site twice for the same content, because i post a lot on it and the adsense is viewed by 1000 persons per day... i have keywords that worth the display of the adsense...
i do not care about the incomes because it is not the adsense goal... my blog is well known now.
i even have made a album review last week, the author contacted me back for the pleasure of it... just cool

he said he found my link in his own adsense references...