In fact, i had used the tool and thought this new one looks familiar. That's how I came to know of Hidalgo. Some pretty interesting projects he's been part of
Same. That’s a bit of a non-starter as even my non-work email isn’t appropriate to share with some random third party. Even if their intentions are good, how could I ever determine if they have appropriate security?
I work for an architecture/design company and we've been using very similar homebrewed software + surveys to analyze what departments need to be near each other for college campuses.
And to discover the key people in networks you are part of. There are always some hubs to all networks and the tool makes an interesting visualisations if these hubs changing over time.