> i really think HN would be better with a reputation system so that posts like these will be checked for accuracy after the fact. accounts that accumulate tons of wrong predictions can be labeled and easily ignored. it would help with this problem where a huge wave of the same wrong opinion floods the comments and everyone else gets greyed out. why do we let wave after wave after wave happen without any accountability?

I don't understand what your point is - the accuracy in question is in a linked article submission, not an HN comment, no?

Which account would be getting labeled as such? The link submitter? I suspect that's too diversified to really be effective.