Agreed about "most people have little idea...". I wish more companies were more honest and open about these things instead of burying it in the fine print. I wonder what would happen if you enable "Suggested Sites" but then install IE 9+ (since it appears to support the DNT flag) and select "Do Not Track". The pessimist in me suspects it will just turn off tracking for all non-msft experiments.

In any case, I think you've convinced me that my decision to use a non-windows OS and a non-IE browser was the correct one.

Thanks for mentioning this...