> They're also into mining some of the "data exhaust". Monetizing this turns them into something much bigger than a social checkin company. Location data chang

> They're also into mining some of the "data exhaust". Monetizing this turns them into something much bigger than a social checkin company. Location data changes very quickly: new places open and close, popularity waxes and wanes, and demographics of neighborhoods change unpredictably. Foursquare's location data is only as good as its freshness, so without a large pool of active users, there is no "data exhaust".