"Here Now! How Foursquare and Facebook Measure Voting With Your Feet in New York"

Untapped Cities writes about Here Now project: 

"The Spatial Information Lab at Columbia University has a new project which measures how people vote with their feet by using Foursquare and Facebook check-ins. The exhibit, entitled Here: Now Social Media and the Psychological City, is currently on display at Columbia University’s  Avery Hall.  Sarah Williams, the co-director of the lab, and her team analyzed two weeks of check-in data pulled from Foursquare and Facebook API to explore how people communicate their thoughts and preferences on locations in New York City. What’s unique about this analysis is that it links psychological information about the city with hard statistical and spatial analysis. Using urban planning tools such as GIS, the exhibit  re-purposes and visualizes where people are at a given place in time and what they are saying about it." Read more here.