ZD Net noted the following:
"Maybe Google Ads, tied to mobile presence?
"Say they know you are in NYC's Bryant Park. Bryant Park is right next to the main branch of the New York Public Library. That's a place frequented by lots of educated readers, computer users, researchers - and hmm, Google users, too.
"OK, let's think about it some more. Maybe if I am a Google salesperson in the NYC office, I visit nearby merchants and sell them Google AdWords?
"Google AdWords or Google AdSense tied to mobile presence? Definitely.