I feel like most comments here will be along the lines of "yeah duh what did you think they were doing with that data", however on less tech focused sites the comments will have the tone of "OMG evil corporations spying on us how is this even legal, hold on let me ask Siri!"
But that is the problem. The general population has no idea how every time they use a thing like Siri or Kinect, or OnStar they are allowing the respective companies that created those services nearly unlimited access to their microphone or camera. Just like people really don't understand how Facebook monetizes their profile and activities.
I think until there is general knowledge of the fact that we have entered the era of generating revenue from users through mining and analyzing their activities, preferences, and other data, we can't even have a productive discussion about the limits of these new ways to collect information. Right now it is just fear mongering and attention grabbing headlines.
Lets get to the point where we can have a rational discourse about the benefits and potential risks of ever present microphones and cameras and develop both moral and legal guidelines to govern their use.