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Or maybe the person with the facebook account doesn't care if some faceless corp knows his name, email, and what him and his friends are doing for dinner.
Maybe instead of assuming the user is ignorant, assume that he isn't a paranoid jackass?
Kinda unrelated, it would be really awesome if there was some place you could go online to view all of your synced android data and modify it from the computer. I know you can do that with contacts and such and there are things like AppBrain, but that's not complete.