Now if only we can get one on Hacker News (for posts).

I just hope they'll be banning accounts that collude. And that works for upvoting too.

I wish HN made the comment upvote/downvote data public. I was integrating with the API once and noticed they don't make that available (similar to the UI).

I have a strong suspicion there are many botnets now controlling the flagging and downvoting in HN automatically. The only way to stop it is for HN to implement it, or make the downvotes/upvotes public data.