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> I really hope Google does not use Gmail data for projects other than ads.

It's already used by the Google Now cards on Android, and it's a fantastic feature. If I book a flight, I automatically get a card that reminds me to leave for the airport at the correct time (taking traffic into account), without any interaction on my part.

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If any flight itinerary hits gmail at all, in fact, it ends up in Now - as I've found out from itineraries forwarded by family and friends. Has been borderline annoying on occasion, since I don't generally care much if someone else's flight has been delayed.

Last week I searched google for more information about a specific compiler error code. Later that day google now showed me flight info for some flight that happened to have the same code.

I find that fantastically useful when I'm traveling to meet family somewhere or when family is traveling to meet me. You can handily swipe them away if they are not useful though.

You really shouldn't treat your family that way.

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