I'm not convinced they are -- the models are entirely different. Google receives the vast bulk of its revenue from advertising based on mining what they know ab

I'm not convinced they are -- the models are entirely different. Google receives the vast bulk of its revenue from advertising based on mining what they know about you. Microsoft receives the vast bulk of its funding from companies using its systems and paying them to run them well. MS do not tie an analytics product (on most sites around the world) into the world's largest personal-data-mining and advertising network.