According to a french blog, internal google information was leaked out and shows that traffic data and google advertising spending may be being used for more than has been perceived by many.
http://www.webpronews.com/topnews/20...king-questions
here is an image of some example data that is being debated:
for those that speak french, here is the link to the french blog:
http://www.zorgloob.com/2007/10/gg-s...de-googler.asp