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What's a widely used term for a (small) group of users voting up each other's questions / answers/ comments?

Does Stack Overflow have any tools/rules in place to prevent this? Say for instance maximum amount of rep from one user to another? I've seen the FAQ, and it only discusses per day maximums.

I did do a search as my assumption is that this would've been discussed before - but I can't think of a search term other than 'cartel', which yields no results.

Just curious.

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Try "voting ring", that may turn up some hits. – Daniel Fischer Jun 24 '12 at 11:40
Have you found one, or are you part of one? – slugster Jun 24 '12 at 11:44
If you have a hunch that you've discovered a voting ring, flag a post by one of the participants for moderation attention and explain that you suspect sockpuppetry. It'd be helpful to provide links to the other users' profiles. – Yannis Jun 24 '12 at 11:53
@slugster - my ring's clearly not very effective !! 'voting ring' turns up just this :… – Sridhar Jun 24 '12 at 11:54
@yannis - really just curious. I've no suspicion / evidence of a voting ring. – Sridhar Jun 24 '12 at 11:55
Some of the rings we find are certainly elaborate enough to earn being called cartels. :) – Adam Lear Jun 25 '12 at 4:04
@slugster he doesn't seems to be a part of it. I have experience of finding such things, so i can say that. – Lucifer Jun 27 '12 at 4:40
up vote 18 down vote accepted

It's called a voting ring, and it's considered abusive behaviour. If it's only two / three accounts, we may also call them sockpuppets.

Moderators have a few tools to detect unusual voting patterns, and that includes groups of people voting each other en masse. If a voting ring is discovered, the usual route is to invalidate the group's votes and suspend everyone involved. I think this is as much information as I can give you on the subject, the rest is super secret.

Voting ring and sockpuppetry are not specific to Stack Exchange / Overflow, they are widely used terms in online communities that have some form of voting, like Hacker News, Reddit, Digg, Quora etc.

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Is it true the algorithms exploit a vulnerability in certain Netgear routers that makes the device overheat, and burns down the perpetrator's house? – Pëkka Jun 24 '12 at 11:58
@Discount Gucci Handbags: We can neither confirm nor deny this. – BoltClock's a Unicorn Jun 24 '12 at 12:01
Ah, I always figured that sockpuppets are really just one single person, (ab)using multiple accounts? – Arjan Jun 24 '12 at 12:05
@Arjan Mostly that, but we also use the term when it's people knowing each other in real life. Some times it's completely innocent, a friend thinking he's doing another friend a favour. – Yannis Jun 24 '12 at 12:08
The algo at work:… – Pëkka Jun 24 '12 at 17:39
The term you are looking for is 'meatpuppet'. – Rosinante Jun 24 '12 at 18:21
I call this phenomenon a cross-pollination. – Sergey K. Jul 30 '13 at 13:30
Technically, doesn't the entirety of StackExchange constitute this? – Raymond Uppier-Püpschrute Feb 5 '15 at 23:23

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