Surely people should be writing (they already briefly were before Siri was known) about Google's attempt at this, including email and os on. Google is far more likely to grab from every source it has, including email, in the background. I'd expect Siri to only read emails you refer to (Siri, what was that restaurant from the email this morning?). FUD with Google isn't as far off as it sometimes seems (yes, agreeing with fud is stupid, but still).