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[email protected]

On Fri, 11 Nov 2016 13:41:33 -0500, wrote:

I got "you may
know" people I don't have in my address book. It was a little spooky.

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FB's inference engine is very, very good. I have no idea how it works
and imagine the answer is top secret to them. Obviously a lot of
smart guys have done some clever stuff. I know one thing they do is
cross reference EMAIL address lists and smart phone directories. They
may also be getting some help from retail partners like Amazon,
linking up people who have bought similar products, live in the same
area, etc.