Yahoo! has been working with our partners in the Internet industry to come up with a standard that allows users to opt out of certain website analytics and ad targeting. In principle, we support “Do Not Track” (DNT). Unfortunately, because discussions have not yet resulted in a final standard for how to implement DNT, the current DNT signal can easily be abused. Recently, Microsoft unilaterally decided to turn on DNT in Internet Explorer 10 by default, rather than at users’ direction. In our view, this degrades the experience for the majority of users and makes it hard to deliver on our value proposition to them. It basically means that the DNT signal from IE10 doesn’t express user intent.Microsoft finally got one right and decided to help users protect their privacy. It's not rocket science to disable or change security settings, so there is no reason for Yahoo to ignore the default setting. The reality is, if someone isn't computer savvy enough to change their browser settings, they should be cautious by default. The crap about this setting being abused is absurd.
You can read the entire policy statement here. It isn't very long, and after a ridiculous plug for their proprietary solutions and expecting us to be grateful for being told why certain ads were selected, they make no valid point as to why they are ignoring the privacy setting, just informing us that they are.
Nice move, asshats. Because you really needed another public black eye, right?