Just like Social New York, this project it is about the visualization of social activity according to Foursquare.
Here’s Paris. Again, you can see areas like Le Marais and Jardin du Luxembourg pop out. In theseactivity ﬁngerprints, as I call them, we see a new image of the city emerge in terms of the density of social interactions. As smartphones begin to penetrate to the level of mobile phones, namely 90% in the UK, these could be considered quite comprehensive snapshots of activity in cities. This is just an aggregate snapshot: We’re only just beginning to look at the spatio-temporal aspect of this data, the dynamics of this kind of social activity.