<A target="_blank" href="http://www.cnn.com/2011/TECH/web/05/19/online.privacy.pariser/index.html?eref=rss_tech&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2Fcnn_tech+%28RSS%3A+Technology%29">Your search engine is very thoughtful.</A> It reviews your past searches and applies that information to new searches. This "targets" your preferences, but can result in you not finding what is actually available.