AdSense is an advertising program run by Google. Web site owners can enroll in this program to enable text and image advertisements on their sites. These ads are administered by Google and generate revenue on a per-click basis. Google utilizes its search technology to serve ads based on website content, the user's geographical location, and other factors. Those wanting to advertise with Google's targeted ad system may sign up through AdWords. So who knows when it started?? Do you think ok if i add an adsense forum in my recent forum??
Some interesting info in this article: http://www.usatoday.com/tech/techinvestor/corporatenews/2007-07-04-google-wojcicki_N.htm
there is even some more nice interesting info in it. adsense was founded by a lady. cheers all ladies!