Voting rings definitely exist in on news recommendation sites. For example, take Digg (I'm expecting to get downmodded for even mentioning this name btw) - you

Voting rings definitely exist in on news recommendation sites. For example, take Digg (I'm expecting to get downmodded for even mentioning this name btw) - you get people shouting within their circle of friends to get stories voted up, so that functionality is essentially built into the system. You also have the opposite true aswell, people banding together to downvote stories too and it happens often enough that theres a term for it "bury brigades" offtopic: I think I might need to get glasses, I originally thought the title was "Clams in news recommendation site?"