(From the most recent book by Bruce Schneier, a
well-known computer security expert):
INTRODUCTION, page 1:
It /= your telephone/ tracks--since it knows about all
the other phones in your area - whom you spend your days
with, whom you meet for lunch, and whom you sleep with.
INTRODUCTION, page 4:
... It includes whom you talk to and what you say.
Has been explained in asher63's commentary:
WITH whom you spend your days
WITH whom you sleep
TO whom you talk
(and "whom you meet" remains OK)
But by no means
"whom you spend your days WITH"
That is incorrect, I gather, and that is why
it made me jump when I read those lines. Jars