A massive array of shimmering advertisements for Foursquare has been erected in New York City's Times Square. This picture just appeared on Flickr; it's pretty impressive. The ad towers over American Eagle's Times Square retail store.

Foursquare reportedly did not pay for the ad space. That means American Eagle is open to promote multiple location services; it's also one of the retailers using Shopkick, a location-based rewards service.

It seems like just a short time ago that these location services were only used by a few hardcore web tech geeks. Now they're so mainstream that they're taking up a chunk of the New York skyline. Did you see that coming? If so, you've been ahead of the curve.





