Flickr: i.stanford.edu/~crucis/code/flickr.zip
Philosophers: i.stanford.edu/~crucis/code/phil.zip
Facebook: https://snap.stanford.edu/data/egonets-Facebook.html
Twitter: https://snap.stanford.edu/data/egonets-Twitter.html
Gplus: https://snap.stanford.edu/data/egonets-Gplus.html