I'm curious about how these classifications were done. I graduated from the MIT Media Lab a few years back, and after looking through the result set titled:

"A small community of users associated with MIT Media lab detected using the algorithm after 7th iteration"

I saw a handful of MIT undergrads listed, many of which I'm certain had no affiliation with the Media lab, while nearly all of the others I do not recognize, even as an active Twitter user. I chose two random entries from this list: 'RFheargaile' and 'realduedate', and found both to be of extremely dubious authenticity.