PC World - Something like this has happened to all of us lately: You shop for a watch for a friend's birthday and for a week afterwards every site you visit features ads for watches. It seems like everyone from Google on down is tracking where we go and what we do on the web and using that information to send us targeted advertisements.
Source: http://us.rd.yahoo.com/dailynews/rss/internet/*http://news.yahoo.com/s/pcworld/20110318/tc_pcworld/canyourbrowserreallystopsitesfromtrackingyourwebbrowsing
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