Last week, Microsoft has announced that IE 10 will have Do Not Track (DNT) by default. Recently, the company has changed the decision about the DNT, from now users must choose to turn on the anti-behavioral tracking system in their browsers and software. If a user do not turn on the DNT, that means the user is allowing to track online behavior. The tech and ad companies has created a pressure on Microsoft for this issue. They has proposed to Microsoft that just ignore Do Not Track by default, user will take decision.