Who writes Wikipedia? An information-theoretic analysis of anonymity and vandalism in user-generated contentWho writes Wikipedia? It's ten and a half years old, and anyone can contribute, but who does? Who actually writes it? How much do registered users contribute versus anonymous users? How does anonymity correlate with the information-theoretic content of their contributions? And, also, who un-writes Wikipedia? Who changes a page so unhelpfully that it gets reverted? And how does anonymity factor int
