Yeah, mainly because of the newbie forum and a lot of work by the mods. Think about how many man-hours are wasted on that bullshit, when it could be automated, as an optional feature built into the anonymity protocol. They claim to offer, "accountable anonymity, giving users strong guarantees of anonymity while also protecting online groups or forums from anonymous abuse such as spam, Sybil attacks, and sockpuppetry Again, not sure how they did it, haven't read the papers yet, but they address your concern.