Is meta-moderation useful when you can vote on as many comments as you'd like? It works on Slashdot because you can only moderate a handful of comments per day

Is meta-moderation useful when you can vote on as many comments as you'd like? It works on Slashdot because you can only moderate a handful of comments per day/week, but if you can moderate an infinite number of comments, you can create downvote-sink comments on an alternate account (or just make sure you downvote every actual troll), so that the majority (or a large minority) of your moderations pass meta-moderation.