Actually, Google denies that they do the same thing pretty emphatically. Basically, they claim that the same test in reverse would not work, because the data s

Actually, Google denies that they do the same thing pretty emphatically. Basically, they claim that the same test in reverse would not work, because the data stream from their toolbar in a reversed test would not affect their algorithms in this manner. But agreed that it seems like a very small nit to be magnified the way it has. Indeed, why they don't do this, and why we should care that Bing does, doesn't seem to be directly addressed other than by hand-wavery and PR speak about the research they've put into their algorithms and such.