Sure, the question is how you differentiate those actions. Some one typed in [x] and then clicked [y] could certainly be generic, but that would be a massive a

Sure, the question is how you differentiate those actions. Some one typed in [x] and then clicked [y] could certainly be generic, but that would be a massive amount of data to crunch and would require a significant amount of congruency to be enough to modify the Bing algorithm. How would it differentiate between a form submission and a search? And if it's not and still sending all of that data back to MS, that's far more disconcerting than them just watching me on Google. It's certainly more believable that the sites were either targeted or were extracted from massive amounts of data for this purpose.