Thread:Sannse/@comment-28890433-20160522122255/@comment-1038387-20160522123643

And because votes can be rigged too: you could set a rule that only people who've been active for a month and/or have more than 30 content edits can vote, to prevent sock and meatpuppets. You can alter those numbers dependent on the nature of the community, but keep it reasonable.

See also User blog:Sannse - there are several blogs on the topic.