Google is going to run advertisements on its content pages, such as Google Finance and, under certain conditions, on Google News. Google ad already announced it would run Sponsored Video ads on YouTube, and has been running ads on Google Image search.
Google said in the very near future, it would start testing text ads on a small number of news refinements within Google Search: "so if, for example, you type "iPod" into Google.com and then click on the news link on the upper left-hand side, you might see text ads alongside those results."
Google said it would evaluate the testing, stating it believes ads by Google should always be relevant and useful. "Of course, these experiments benefit Google because they generate revenue from new sources - but by ensuring that we show the right ads at the right time to the right people, we'll add value for users too."
http://googleblog.blogspot.com/2008/11/ads-in-new-places.html
