Chris Wilson, the platform architect of Microsoft's IE 7, pointed out that the problem with creating a secure mode for web applications is that while many developers want to provide users with a convenient way to publish their own content, other developers may want to use the browser to create applications with more stringent access restrictions. He said that coming up with a secure mode that can truly be used by billions of users is a good way to solve this problem.
Original article from: Huo Huozi http://www.52huohu.org