> For instance the way HN works now afaik, somebody could post 'me too' comments to get enough karma to downvote, then turn around, downvote all posts supporting some idea they dislike, and there would be no way for other posters to correct this or know it was happening.
FYI, I think that this is supposed to be automatically detected and nullified by the website software, although I can't speak to the details.
So you have a group of trolls that all upvote each other's comments. Unless the system also penalizes upvotes then they get disproportionally too much karma. And if the system does penalize upvotes then somebody that always posts really great posts gets too little visibility because his upvotes look trollish (ie maybe they come from the few people that really recognize an expert in a small domain). It seems that an automated system is always going to promote mediocrity.
FYI, I think that this is supposed to be automatically detected and nullified by the website software, although I can't speak to the details.