I've recently received a Nexus 5, which touts very tight Google Now integration. This weekend I've been visiting my parents. We had a discussion about a local restaurant which they went to last night. I just flicked over to Google Now and it's got a card about that restaurant, and only that restaurant. (we're in a big town, there are many restaurants, and it's by no means the nearest. I've never been there before). Is this a crazy coincidence or is Google Now listening to me?
We've had nothing mention of the restaurant in email's or texts, only a face to face conversation this afternoon while I had my phone out (but not explicitly listening).