Slashdot also has a metamoderation system where after you've had votes for a while you are asked to confirm if comments were "Funny, Insightful, Troll etc" whic

Slashdot also has a metamoderation system where after you've had votes for a while you are asked to confirm if comments were "Funny, Insightful, Troll etc" which could then lead to people losing the ability to vote for a while for using the votes incorrectly.