Do-Not-Track by default in IE10
IE10 sends a “Do Not Track” signal to Web sites by default.
The Sixth IE10 Platform Preview
…thus making Do Not Track (DNT) request header in fact useless. Entire point of DNT is exactly that it is informed choice of user, and noway a default setting that most users do not know of at all.
Consequently, DNT will stop perform a function of informing website about intent of user, and web developers will almost certainly stop taking DNT into account.