Recently we told how the advertising business was enraged by Microsoft’s decision to break ranks with the industry and make “Do Not Track” the default position on Internet Explorer 10. Web advertising is almost entirely dependent on the ability to track users and make targeted guesses about their interests. Billions of dollars in spending and revenue rely almost entirely on tracking data. DNT threatens it all, especially if users or the makers of the other browsers — Chrome and Firefox — adopt the same position. Read the full story at Business Insider.