Oh, yes. It assigns a small number of 'moderation points' to random users, and a larger number to trusted users. Essentially their algo picks out random users to moderate just a little, which lets the diaspora bump up visibility of what they like. In addition to up and downvotes the mods label a post "+1 Informative", "+1 Funny", or "-1 Flamebait". Users can assign more visibility to something which has been voted Informative twice than once Informative and once Funny. There is no "-1 I disagree". The purpose of the votes are obvious.
There is meta-moderation on top of this which has users check the moderation of other users. I assume people who repeatedly abuse their privilege are given sub-naive priority for mod point assignment.
This scales with traffic and requires the minimum of admin oversight.
