Not one but two former office mates of mine are quoted on the front page of the Times today in a story about Facebook. Jason Kaufman talks about his work with Nicholas Christakis on patterns of affiliation amongst Facebook users. Our own Eszter Hargittai talks about her research on comparative adoption of Facebook and MySpace. And my brilliant colleague Ron Breiger will doubtless be pleased to see that Georg Simmel gets a shoutout too, for the idea of triadic social closure.