Google and now Yahoo! have announced behavioral targeting. So far, it seems that the behavioral targeting is affecting advertising, but are the natural, organic results too far behind?
We think not.

Google & Yahoo! are using your search behavior to determine what ads you’ll see displayed. If your searching for a new car, based on your past searches you may get a certain set of results that your great friend down the street would get if he/she searched for the same thing.

This being March 2009, we hope you read our blog that mentions search engines using behavioral targeting back in November 2008.