ISSUE-163: How in the spec should we ensure user agents don't twist a user preference one way or another? (Text that biases user decisions, "express" work flows, etc). Related to outcome if ISSUE-149 and http://lists.w3.org/Archives/Public/public-tracking/2012Sep/0197.html
tracking-ISSUE-168: What is the correct way for sub-services to signal that they are taking advantage of a transferred exception? [Tracking Preference Expression (DNT)]