> Nah I have the same regularly when I only talk about things with a friend. Sure, but did your friend google those things at any point (before or after your c

> Nah I have the same regularly when I only talk about things with a friend. Sure, but did your friend google those things at any point (before or after your conversation)? Do you ever connect to the same wifi access points? Are your phones ever in physical proximity? Almost certainly your answer would be "yes" to most of those questions, which also explains how you get the suggestions about things you "only talked about" with your friend. I agree that this is not a coincidence, but the explanation is rather simple, really. If there is a user A who googles topic X, and there is another user B who appears to be their "social link" (via device proximity, occasionally utilizing same wifi access points, sending emails to each other, etc), it makes sense to suggest topic X to user B.