http://www.cnn.com/2008/TECH/02/06/microsoft.ads.ap/index.html

This article discusses the new ways in which advertisers are going to place ads specific to personal searches. They use keywords to personalize the advertisment seen on individual's computers. Also, they are developing voice recognition for videos online so the advertiser can put ads relevant to what a person is watching on the screen next to the video. Microsoft is also introducing techonology that has the ability to time the ad so that it is placed at the time it would least interfere with the video being watched. In some ways this is useful because the only ads a person will see will be relevant to their perferences. However, it is also a little scary how much information advertisers are getting from a person unwillingly by knowing what a person is searching for or watching online.